I like the backdrop, but the avatar I have a big issue with.
Head doesn't match the tone of the body though, I notice this issue a lot. To fix, check the box afect all materials with the same name in the material settings.
Lighting wise, I say try the 3 point lighting system with spotlights. One key, one fill, and one back using spotlights and see if it helps.
iClone Certified Director and makes miserable Westerns.