\usetikzlibrary{shapes.geometric,positioning}




\begin{tikzpicture}[thick,
	st/.style={
		rectangle,
		rounded corners,
		fill=green!10,
		draw=green
	},
	io/.style={
		trapezium,
		trapezium left angle=70,
		trapezium right angle=110,
		fill=magenta!10,
		draw=magenta
	},
	op/.style={
		rectangle,
		fill=orange!10,
		draw=orange	
	},
	cn/.style={
		diamond,
		aspect=2,
		inner sep=2pt,
		fill=red!10,
		draw=red
	},
	node distance=5mm
]

	\node [st]  (we) {Werk};
	\node [cn, right =of we] (wt) {Werk teilen?};
	\node [cn, right= of wt]  (wb) {Werk bearbeiten?};
	\node [cn, right= of wb]  (wk) {Werk kommerziell?};
	\node [cn, right= of wk]  (na) {Namensnennung?};

\path [->] 
	(we) edge (wt)
	(wt) edge (wb)
	(wb) edge (wk)
	(wk) edge (na); 
\end{tikzpicture}