Hello,
I give here a test scene (C4D R15). Use it exclusively for their learning needs. Set it by yourself, try different materials, set enviroment,
background, sun and again, please give download here. The more people you will play with the scene, the more we all learn .. "o)
I can a lot of things, but hopefully it will ever learn from you through this scene. Play and thank you for your better setup .. 'o)
(text is translated google translator .. Sorry ..)