Found the solution by myself. I deleted the \part{}
command after \begin{document}
and pasted the following instead:
\begin{document}
\begin{minipage}[t]{0.5\textwidth}
\begin{minipage}[t]{0.49\textwidth}
\vspace{0pt} % Trick for alignment
\includegraphics[scale=0.7]{picture.jpg}
\end{minipage}
\begin{minipage}[t]{0.49\textwidth}
\vspace{0pt} % Trick for alignment
\sffamily\Huge <FIRST NAME><LAST NAME>% Your name
\vspace{30pt}
\small Place of birth: <DATE>\\
\small Date of birth: <CITY>
\end{minipage}
\end{minipage}
before the first section. Don't forget to load \usepackage{graphicx}
in the preamble.