diff --git a/best-practices/slides/build.sh b/best-practices/slides/build.sh
new file mode 100644
index 0000000..5102f2b
--- /dev/null
+++ b/best-practices/slides/build.sh
@@ -0,0 +1,3 @@
+export TEXINPUTS=::`pwd`/theme/
+xelatex slides.tex
+xelatex slides.tex
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diff --git a/best-practices/slides/slides.pdf b/best-practices/slides/slides.pdf
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diff --git a/best-practices/slides/slides.tex b/best-practices/slides/slides.tex
new file mode 100644
index 0000000..f04b82b
--- /dev/null
+++ b/best-practices/slides/slides.tex
@@ -0,0 +1,190 @@
+%!TEX program = xelatex
+\documentclass{beamer}
+
+\usepackage{blindtext}
+\usepackage{multicol}
+
+\usetheme{Execushares}
+
+\title{How FOSS can help human to keep their sanity during a pandemic crisis?}
+\subtitle{{\it Building better open source projects}}
+\author{Pauline Bourmeau (@Ko97551819) - Alexandre Dulaunoy (@adulau)}
+\date{June 29, 2020}
+
+\setcounter{showSlideNumbers}{1}
+
+\begin{document}
+	\setcounter{showProgressBar}{0}
+	\setcounter{showSlideNumbers}{0}
+
+	\frame{\titlepage}
+
+\begin{frame}[fragile]
+        \frametitle{Background}
+            {\center \it \Large During the lockdown, should we work on an obscure open source natural language processing project\\ or {\bf just do cloth face mask}?\\}
+        \begin{flushright}
+        Another video chat.
+        \end{flushright}
+    \end{frame}
+
+\begin{frame}[fragile]
+        \frametitle{Meaning of Life}
+        \begin{itemize}
+                \item {\bf Doing} something which is an imminent and vital need: {\bf face masks\footnote{\url{https://mianmo-project.github.io/}}}
+                        \begin{itemize}
+                \item It works
+                \item and many open source rules and practices apply
+                \item What did we learn? and help your next open source security project
+                        \end{itemize}
+        \end{itemize}
+        \includegraphics[scale=0.08]{./images/project.png}
+    \end{frame}
+
+\begin{frame}[fragile]
+        \frametitle{Resonate and be human}
+
+        \begin{multicols}{2}
+          \null \vfill
+\includegraphics[scale=0.2]{./images/pts-patron-1.png}
+  \vfill \null
+\columnbreak
+           \null \vfill
+        \begin{itemize}
+                \item {\it Users are wonderful things to have, and not just because they demonstrate that you're serving a need, that you've done something right.}\footnote{The Cathedral and the Bazaar, Eric Steven Raymond}
+                \item In other words, face masks without users are useless
+                \item {\bf Be your first users}, this will already saves life
+        \end{itemize}
+          \vfill \null
+\end{multicols}
+\end{frame}
+
+\begin{frame}[fragile]
+        \frametitle{Try and don't be afraid}
+
+        \begin{multicols}{2}
+\null \vfill
+\includegraphics[scale=0.05]{./images/git-log.jpg}
+        \vfill \null
+        \columnbreak
+        \null \vfill
+        \begin{itemize}
+                \item Learn from scratch
+                \item Keep a trace and {\bf publish your failures}
+                \item Why git was under-used during the design of cloth face mask?
+                \item Keeping track of all face mask design videos is a f*cking challenge\footnote{{\tiny but we enjoyed seeing the different cultures through the lens of face mask design}}
+                \item Pick a video and try \footnote{{\tiny bound to YouTube recommendation algorithms}}
+                \item Filling the gap of written documentation
+        \end{itemize}
+         \vfill \null
+\end{multicols}
+\end{frame}
+
+\begin{frame}[fragile]
+        \frametitle{Tooling}
+       \begin{multicols}{2}
+\null \vfill
+\includegraphics[scale=0.16]{./images/pts-ikea2.png}
+       \vfill \null
+       \columnbreak
+       \null \vfill
+       \begin{itemize}
+		\item {\it \tiny Ivan Illich defined convivial tools as those most accessible by each person, the least controlled by others, and without restricting equal use by others.}\footnote{Ivan Illich’s book "Tools for Conviviality," published in 1973.}
+        \item While designing and building face-masks, people took back the control of the tools by becoming producers
+        \item They use the {\bf most easy and accessible tools} (not always open source) to provide guidelines
+       \end{itemize}
+        \vfill \null
+\end{multicols}
+\end{frame}
+
+\begin{frame}[fragile]
+        \frametitle{Less "Intellectual Property Rights"}
+        \begin{itemize}
+        \item The fluidity of creative exchanges was helped by fewer legal constraints
+        \item Social pressure can help in such period
+        \item Many projects during the lock-down relied on {\bf existing open source, free software and content licensing schemes}
+        \item A lot of cloth face mask designers didn't know they were doing open source
+        \end{itemize}
+
+\end{frame}
+
+\begin{frame}[fragile]
+        \frametitle{Reinforcing Social Relationships}
+        \begin{multicols}{2}
+        \null \vfill
+        \includegraphics[scale=0.08]{./images/soutif.png}
+        \includegraphics[scale=0.08]{./images/miso.png}
+        \vfill \null
+        \columnbreak
+        \null \vfill
+        \begin{itemize}
+                \item {\bf Fun is key} to keep sanity in an open source community
+          \item With covid-19, all open source contributors discovered the social reality of existing remote contributors
+          \item Relying on the existing experience of managing open source community\footnote{Social Architecture - Building On-line Communities by Pieter Hintjens}
+        \end{itemize}
+        \vfill \null
+        \end{multicols}
+\end{frame}
+
+\begin{frame}[fragile]
+        \frametitle{Fun is really important}
+        \includegraphics[scale=0.2]{./images/boite.png}
+\end{frame}
+
+\begin{frame}
+        \frametitle{How to cultivate your FOSS project?}
+        \begin{itemize}
+                \item Fun is important but the gift aspect is a strong community cement
+                \item Sharing common tools and objectives to create values
+                \item Create knowledge via open source projects as a medium
+                \item {\bf Reciprocity to support self-management of open source communities}
+                \item Diverse contributors and contribution ensure project stability
+        \end{itemize}
+\end{frame}
+
+\begin{frame}[fragile]
+        \frametitle{Thank You}
+        \begin{itemize}
+                \item {\bf Markdown} format and all the open source rendering implementations
+                \item {\bf Inkscape} (to make cool logos for open source project)
+                \item {\bf git} (even if the handling of binary files is still hard)
+                \item {\bf BBB BigBlueButton} and {\bf Jitsi} (diversity is good when one fails)
+                \item {\bf Python} (for extracting large table of filtering tests only available in crappy PDF generated from an unpublished XLS file)
+                \item {\bf SciHub} (thanks Alexandra) as it was the only way to download the academic papers about the filtering of textile fabrics
+                \item {\bf All the people who did face masks} and didn't know they were part of the open source and maker community
+        \end{itemize}
+\end{frame}
+
+
+\begin{frame}[fragile]
+        \frametitle{Where We Succeeded}
+        \begin{itemize}
+                \item The {\bf open source and maker communities resonated} during the crisis with a lot of initiatives
+                \item The past 20+ years of open source licensing did help a lot (less friction in exchange)
+                \item Git repositories supported the coordination effort on contributions and content publishing
+        \end{itemize}
+\end{frame}
+
+\begin{frame}[fragile]
+        \frametitle{Where We Failed}
+        \begin{itemize}
+                \item Some open source tools are still {\bf too complex} to use compared of the sharing of a YouTube video
+                \item We are still bad at indexing, evaluating, coordinating and archiving projects (how many face mask designs on GitHub?)
+                \item Release early, release often. We failed there as early was a matter of days and not weeks
+                \item {\bf Opportunity for new open source projects} such as markdown notes taking and video screenshot at the same time
+        \end{itemize}
+\end{frame}
+
+\appendix
+	\backupbegin
+	  \begin{frame}
+	    \frametitle{Bibliography}
+        \begin{enumerate}
+                \item Ivan Illich, Tools for Conviviality, 1973. {\tiny \url{https://co-munity.net/system/files/ILLICH\%201973\_tools\_for\_convivality\_1.pdf}}
+                \item Eric Steven Raymond, The Cathedral and the Bazaar, 1997. {\tiny \url{http://www.catb.org/~esr/writings/cathedral-bazaar/}}
+                \item Pekka Himanen, The Hacker Ethic, 2001.
+                \item Pieter Hintjens, Social Architecture - Building On-line Communities, 2016. {\tiny \url{http://www.foo.be/docs-free/social-architecture/book.pdf}}
+        \end{enumerate}
+	  \end{frame}
+	\backupend
+
+\end{document}
diff --git a/best-practices/slides/theme/beamerthemeExecushares.sty b/best-practices/slides/theme/beamerthemeExecushares.sty
new file mode 100644
index 0000000..099e8d6
--- /dev/null
+++ b/best-practices/slides/theme/beamerthemeExecushares.sty
@@ -0,0 +1,216 @@
+% the various libraries we will be using
+\usepackage{tikz}
+\usetikzlibrary{calc}
+\usepackage[none]{hyphenat}
+\usepackage{fontspec}
+\defaultfontfeatures{Ligatures=TeX}
+
+\newif\ifbeamer@pixelitem
+\beamer@pixelitemtrue
+\DeclareOptionBeamer{nopixelitem}{\beamer@pixelitemfalse}
+\ProcessOptionsBeamer
+
+% define colours
+% taken from pickton on Adobe Kuler:
+% https://kuler.adobe.com/Some-Kind-Of-Execushares-color-theme-3837185/
+%\definecolor{ExecusharesRed}{RGB}{230,37,52}
+\definecolor{ExecusharesBlack}{RGB}{43,40,40}
+\definecolor{ExecusharesRed}{RGB}{43,40,40} % Red is the new blue
+\definecolor{ExecusharesBlue}{RGB}{22,190,207} % Red is the new blue
+\definecolor{ExecusharesWhite}{RGB}{255,255,243}
+\definecolor{ExecusharesGrey}{RGB}{107,110,108}
+
+% use Adobe's Source Pro fonts:
+% Source Serif Pro: https://github.com/adobe-fonts/source-serif-pro
+% Source Sans Pro: https://github.com/adobe-fonts/source-sans-pro
+% Source Code Pro: https://github.com/adobe-fonts/source-code-pro
+\setmainfont{Source Serif Pro}
+\setsansfont{Source Sans Pro}
+\setmonofont{Source Code Pro}
+
+% To use with pdflatex,
+% comment the fontspec package at the top
+%\usepackage{sourceserifpro}
+%\usepackage{sourcesanspro}
+%\usepackage{sourcecodepro}
+
+% set colours
+\setbeamercolor{itemize item}{fg=ExecusharesBlue}
+\setbeamercolor{enumerate item}{fg=ExecusharesBlue}
+\setbeamercolor{alerted text}{fg=ExecusharesBlue}
+\setbeamercolor{section in toc}{fg=ExecusharesBlack}
+
+% set fonts
+\setbeamerfont{itemize/enumerate body}{size=\large}
+\setbeamerfont{itemize/enumerate subbody}{size=\normalsize}
+\setbeamerfont{itemize/enumerate subsubbody}{size=\small}
+
+\ifbeamer@pixelitem
+% make the itemize bullets pixelated >
+\setbeamertemplate{itemize item}{
+	\tikz{
+		\draw[fill=ExecusharesBlue,draw=none] (0, 0) rectangle(0.1, 0.1);
+		\draw[fill=ExecusharesBlue,draw=none] (0.1, 0.1) rectangle(0.2, 0.2);
+		\draw[fill=ExecusharesBlue,draw=none] (0, 0.2) rectangle(0.1, 0.3);
+	}
+}
+% make the subitems also pixelated >, but a little smaller and red
+\setbeamertemplate{itemize subitem}{
+	\tikz{
+		\draw[fill=ExecusharesRed,draw=none] (0, 0) rectangle(0.075, 0.075);
+		\draw[fill=ExecusharesRed,draw=none] (0.075, 0.075) rectangle(0.15, 0.15);
+		\draw[fill=ExecusharesRed,draw=none] (0, 0.15) rectangle(0.075, 0.225);
+	}
+}
+\fi
+
+% disable navigation
+\setbeamertemplate{navigation symbols}{}
+
+% custom draw the title page above
+\setbeamertemplate{title page}{}
+
+% again, manually draw the frame title above
+\setbeamertemplate{frametitle}{}
+
+% disable "Figure:" in the captions
+\setbeamertemplate{caption}{\tiny\insertcaption}
+\setbeamertemplate{caption label separator}{}
+
+% since I don't know a better way to do this, these are all switches
+% doing `\setcounter{showProgressBar}{0}` will turn the progress bar off (I turn it off for Appendix slides)
+% etc
+\newcounter{showProgressBar}
+\setcounter{showProgressBar}{1}
+\newcounter{showSlideNumbers}
+\setcounter{showSlideNumbers}{1}
+\newcounter{showSlideTotal}
+\setcounter{showSlideTotal}{1}
+
+% Set beginning of backup slides
+% This lets you having the slides counter ending with the "thank you" slide and avoiding the annoying question "why is the thank you at slide 38/41?"
+\newcommand{\backupbegin}{
+   \newcounter{finalframe}
+   \setcounter{finalframe}{\value{framenumber}}
+}
+\newcommand{\backupend}{
+   \setcounter{framenumber}{\value{finalframe}}
+}
+
+% use \makeatletter for our progress bar definitions
+% progress bar idea from http://tex.stackexchange.com/a/59749/44221
+% slightly adapted for visual purposes here
+\makeatletter
+\newcount\progressbar@tmpcounta% auxiliary counter
+\newcount\progressbar@tmpcountb% auxiliary counter
+\newdimen\progressbar@pbwidth %progressbar width
+\newdimen\progressbar@tmpdim % auxiliary dimension
+
+\newdimen\slidewidth % auxiliary dimension
+\newdimen\slideheight % auxiliary dimension
+
+% make the progress bar go across the screen
+%\progressbar@pbwidth=12.8cm
+\progressbar@pbwidth=\the\paperwidth
+\slidewidth=\the\paperwidth
+\slideheight=\the\paperheight
+
+% use tikz to draw everything
+% it may not be the best, but it's easy to work with
+% and looks good
+% TODO: base title slide and contents slide on something other than slide numbers :/
+\setbeamertemplate{background}{
+	% deal with progress bar stuff
+	% (calculate where it should go)
+	\progressbar@tmpcounta=\insertframenumber
+	\progressbar@tmpcountb=\inserttotalframenumber
+	\progressbar@tmpdim=\progressbar@pbwidth
+	\divide\progressbar@tmpdim by 100
+	\multiply\progressbar@tmpdim by \progressbar@tmpcounta
+	\divide\progressbar@tmpdim by \progressbar@tmpcountb
+	\multiply\progressbar@tmpdim by 100
+
+	\begin{tikzpicture}
+		% set up the entire slide as the canvas
+		\useasboundingbox (0,0) rectangle(\the\paperwidth,\the\paperheight);
+
+		% the background
+		\fill[color=ExecusharesWhite] (0,0) rectangle(\the\paperwidth,\the\paperheight);
+
+		% separate the drawing based on if we're the first (title) slide or not
+		\ifnum\thepage=1\relax
+			% the title page
+			% draw the fills
+			\fill[color=ExecusharesRed] (0, 4cm) rectangle(\slidewidth,\slideheight);
+
+			% draw the actual text
+			\node[anchor=south,text width=\slidewidth-1cm,inner xsep=0.5cm] at (0.5\slidewidth,4cm) {\color{ExecusharesWhite}\Huge\textbf{\inserttitle}};
+			\node[anchor=north east,text width=\slidewidth-1cm,align=right] at (\slidewidth-0.4cm,4cm) {\color{ExecusharesBlack}\tiny\insertsubtitle};
+			\node[above] at(0.5\slidewidth,2.3cm) {\color{ExecusharesBlack}\tiny by};
+			\node at (0.5\slidewidth,2cm) {\color{ExecusharesBlack}\normalsize\insertauthor};
+
+			% add the date in the corner
+			\node[anchor=south east] at(\slidewidth,0cm) {\color{ExecusharesGrey}\tiny\insertdate};
+		\else
+			% NOT the title page
+			% title bar
+			\fill[color=ExecusharesRed] (0, \slideheight-1cm) rectangle(\slidewidth,\slideheight);
+
+			% swap the comment on these to add section titles to slide titles
+			%\node[anchor=north,text width=11.8cm,inner xsep=0.5cm,inner ysep=0.25cm] at (6.4cm,9.6cm) {\color{ExecusharesWhite}\Large\textbf{\insertsectionhead: \insertframetitle}};
+			\node[anchor=north,text width=\slidewidth-1cm,inner xsep=0.5cm,inner ysep=0.25cm] at (0.5\slidewidth,\slideheight) {\color{ExecusharesWhite}\huge\textbf{\insertframetitle}};
+			
+			% if we're showing a progress bar, show it
+			% (I disable the progress bar and slide numbers for the "Appendix" slides)
+			\ifnum \value{showProgressBar}>0\relax%
+				% the the progress bar icon in the middle of the screen
+				\draw[fill=ExecusharesGrey,draw=none] (0cm,0cm) rectangle(\slidewidth,0.25cm);
+				\draw[fill=ExecusharesRed,draw=none] (0cm,0cm) rectangle(\progressbar@tmpdim,0.25cm);
+
+				% bottom information
+				\node[anchor=south west] at(0cm,0.25cm) {\color{ExecusharesGrey}\tiny\vphantom{lp}\insertsection};
+				% if slide numbers are active
+				\ifnum \value{showSlideNumbers}>0\relax%
+					% if slide totals are active
+					\ifnum \value{showSlideTotal}>0\relax%
+						% draw both slide number and slide total
+						\node[anchor=south east] at(\slidewidth,0.25cm) {\color{ExecusharesGrey}\tiny\insertframenumber/\inserttotalframenumber};
+					\else
+						% slide totals aren't active, don't draw them
+						\node[anchor=south east] at(\slidewidth,0.25cm) {\color{ExecusharesGrey}\tiny\insertframenumber};
+					\fi
+				\fi
+			% don't show the progress bar?
+			\else
+				% section title in the bottom left
+				\node[anchor=south west] at(0cm,0cm) {\color{ExecusharesGrey}\tiny\vphantom{lp}\insertsection};
+				% if we're showing slide numbers
+				\ifnum \value{showSlideNumbers}>0\relax%
+					% if slide totals are active
+					\ifnum \value{showSlideTotal}>0\relax%
+						% draw both slide number and slide total
+						\node[anchor=south east] at(\slidewidth,0cm) {\color{ExecusharesGrey}\tiny\insertframenumber/\inserttotalframenumber};
+					\else
+						% slide totals aren't active, don't draw them
+						\node[anchor=south east] at(\slidewidth,0cm) {\color{ExecusharesGrey}\tiny\insertframenumber};
+					\fi
+				\fi
+			\fi
+		\fi
+	\end{tikzpicture}
+}
+\makeatother
+
+% add section titles
+\AtBeginSection{\frame{\sectionpage}}
+\setbeamertemplate{section page}
+{
+	\begin{tikzpicture}
+		% set up the entire slide as the canvas
+		\useasboundingbox (0,0) rectangle(\slidewidth,\slideheight);
+		%\fill[color=ExecusharesWhite] (0,0) rectangle(\the\paperwidth,\the\paperheight);
+		\fill[color=ExecusharesWhite] (-1cm, 2cm) rectangle (\slidewidth, \slideheight+0.1cm);
+		\fill[color=ExecusharesRed] (-1cm, 0.5\slideheight-1cm) rectangle(\slidewidth, 0.5\slideheight+1cm);
+		\node[text width=\the\paperwidth-1cm,align=center] at (0.4\slidewidth, 0.5\slideheight) {\color{ExecusharesWhite}\Huge\textbf{\insertsection}};
+	\end{tikzpicture}
+}