This is one of my example project for my blender book. I have made the full tutorial step by step to explain how to finish it from modeling to render and composition.
The render engine is Yafaray and render time is 60mins. The composition is done by Node system.
You could check the wip thread for my book: http://blenderartists.org/forum/showthread.php?t=177384
Hope you like it. =)