\newcommand{\itembullet}{\begin{itemize}[label={•}]}

\newcommand{\newimage}[4]{
\begin{figure}[!h]
	\begin{center}
		\includegraphics[width=#1\textwidth]{#2}
		\caption{#3}
		\label{fig:#4}
	\end{center}
\end{figure}
}