diff --git a/examples/tikz-graphs_cheat-sheet.pdf b/examples/tikz-graphs_cheat-sheet.pdf
index 1ce0d41..7f74a32 100644
Binary files a/examples/tikz-graphs_cheat-sheet.pdf and b/examples/tikz-graphs_cheat-sheet.pdf differ
diff --git a/examples/tikz-graphs_cheat-sheet.tex b/examples/tikz-graphs_cheat-sheet.tex
index d4a2788..2b208fa 100644
--- a/examples/tikz-graphs_cheat-sheet.tex
+++ b/examples/tikz-graphs_cheat-sheet.tex
@@ -12,8 +12,8 @@
     \setlength{\headheight}{15.2pt}
     \pagestyle{fancy}
     \fancyhf{}
-    \fancyhead[R]{cheat sheet}
-    \fancyhead[L]{tikz graphs}
+    \fancyhead[R]{\leftmark}
+    \fancyhead[L]{Tikz Graphs}
     \fancyfoot[C]{\thepage}
 
 %
@@ -78,7 +78,7 @@
 % maketitle
 %
 
-\title{tikz graphs}
+\title{Tikz Graphs}
 \subject{cheat sheet}
 \author{Isabell Pflug}
 \date{\today}
@@ -210,14 +210,14 @@
 
 \pagebreak
 \section{Automatons}
-\begin{tikzpicture}[every initial by arrow/.style={->>}]
+\begin{tikzpicture}[every initial by arrow/.style={->>,thick}]
 
   \node[state,initial]  (q_0)                      {$q_0$};
   \node[state, accepting]          (q_1) [above right=of q_0] {$q_1$};
   \node[state]          (q_2) [below right=of q_0] {$q_2$};
   \node[state, accepting]          (q_3) [right=of q_2] {$q_3$};
 
-  \path[->] (q_0) edge                                 node [above left]   {0} (q_1)
+  \path[->, thick] (q_0) edge                                 node [above left]   {0} (q_1)
                   edge                                 node [below left]   {1} (q_2)
             (q_1) edge [loop above]                    node                {0} ()
             (q_2) edge [loop below]                    node                {1} ()