So,
I've tried using this method but I keep having this:
I would like my three images to use the whole width (or like 90% of it) of the paper and not only the \textwidth
Is it possible?
Ok so, thanks to https://tex.stackexchange.com/users/134144/leandriis I've found out how to do that.
Before the \begin{document} use
\usepackage{changepage}
\newlength{\offsetpage}
\setlength{\offsetpage}{3.0cm}
\newenvironment{widepage}{\begin{adjustwidth}{-\offsetpage}{-\offsetpage}%
\addtolength{\textwidth}{2\offsetpage}}%
{\end{adjustwidth}}
where 3.0cm is the amount of space you want to overflow from the margins.
Then you simply use it as
\begin{figure}[!htb]
\begin{widepage}
\minipage{0.32\textwidth}
\includegraphics[width=\linewidth]{PMF_57.eps}
\caption{A really Awesome Image}\label{fig:awesome_image1}
\endminipage\hfill
\minipage{0.32\textwidth}
\includegraphics[width=\linewidth]{PMF_570.eps}
\caption{A really Awesome Image}\label{fig:awesome_image2}
\endminipage\hfill
\minipage{0.32\textwidth}%
\includegraphics[width=\linewidth]{PMF_57000.eps}
\caption{A really Awesome Image}\label{fig:awesome_image3}
\endminipage
\end{widepage}
\end{figure}
adjustwidthenvironment from thechangepagepachage might be useful (See also https://tex.stackexchange.com/a/154766/134144) – leandriis Mar 31 '20 at 11:50