[DarkMaster]

I guess you could just do the light source coming down from above, unless you want something a little more dynamic. Probably better off just doing some very simplistic shading, as the picture looks pretty good even without shading.

In terms of a background, what exactly is this going to be? Just a regular pic? Kind of depends on what it's going to be used for. Something simple and stylish like the kill bullet bill pic would be good I think.