postertest.tex

\documentclass[25pt, a0paper, portrait]{tikzposter}
\usepackage[utf8]{inputenc}

\title{Tikz Poster Example}
\author{ShareLaTeX Team}
\date{\today}
\institute{ShareLaTeX Institute}

\usepackage{blindtext}
\usepackage{comment}

\usetheme{Rays}

\begin{document}

\maketitle

\block{~}
{
    \blindtext
}

\begin{columns}
    \column{0.4}
    \block{More text}{Text and more text}

    \column{0.6}
    \block{Something else}{Here, \blindtext \vspace{4cm}}
    \note[
        targetoffsetx=-9cm
        targetoffsety=-6.5cm
        width=0.5\linewidth
        ]
        {e-mail \texttt{latex@latex.com}}
\end{columns}

\begin{columns}
    \column{0.5}
    \block{A figure}
    {
        \begin{tikzfigure}
            \includegraphics[width=0.4\textwidth]{intro/latexmeme.png}
        \end{tikzfigure}
    }
    \column{0.5}
    \block{Description of the figure}{\blindtext}
\end{columns}

\end{document}