\documentclass[12pt,a4paper]{report}

\usepackage{amsmath,amsfonts,amssymb,amsthm,amscd}

\usepackage{epsfig}
\usepackage{psfrag}
\usepackage{hyperref}


\newtheorem{theorem}{Theorem}
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{corollary}[theorem]{Corollary}
\newtheorem{remark}[theorem]{Remark}
\newtheorem{observation}[theorem]{Observation}
\newtheorem{claim}[theorem]{Claim}
\newtheorem{problem}{Problem}
\newtheorem{prop}[theorem]{Proposition}

\newtheorem*{mydef}{Definition}
\newtheorem*{mydefs}{Definitions}
\newcommand{\myitem}{\noindent $\bullet$ }
\newcommand{\mysmallitem}{\par\smallskip \noindent \hskip 5mm $-$ }
\newcommand{\Rcal}{\mathcal{R}}
\newcommand{\Rbf}{\mathbf{R}}

\def\epsi{\varepsilon}

\def\underlineodd#1{\def\tempa{#1}\def\tempb{.}%
\ifx\tempa\tempb\let\dale\relax\else\underline{#1}\let\dale\underlineeven\fi%
\dale}%
\def\underlineeven#1{\def\tempa{#1}\def\tempb{.}%
\ifx\tempa\tempb\let\dale\relax\else {#1}\let\dale\underlineodd\fi%
\dale}%

\def\inst#1{$^{#1}$}

\long\def\onefigure#1#2#3#4{%  #1 picture, #2 scale, #3 caption, #4 label
\begin{figure}[ht]
\begin{center}
\scalebox{#2}
{
\includegraphics{#1}
}
\end{center}
\caption{\label{#4} #3}
\end{figure}
} %end onefigure def

\newcommand{\myfig}[3]  % my figure
{\onefigure{{#1.pdf}} {#2} {#3} {f:#1}}



\begin{document}



{\large \begin{problem} Very interesting problem  (suggested by Your Name)
\end{problem}}



\noindent {Source:} Proposed by Well-known Person in XY?? year.
\begin{mydefs}
{\ }\par
\myitem
Here you can write a definition.

\myitem
And another definiton.

\myitem
And another...
\end{mydefs}

\medskip

\noindent {\bf Example:}
\newline You may even give an example.

\medskip



If you need a figure please make a pdf file.
\myfig{kam}{1}{Picture title.}


\noindent {\bf Question:}
Pose your question.
\medskip

\noindent {\bf Related results:}

\myitem
Here you may list some known facts.

\myitem
And some more.


\medskip

\noindent {\bf References:}

List papers that are related.

\bigskip
\end{document}