I again must ask for assistance

[Chris2Balls [:B]]

I won't reiterate what Gors has said, but here are a few more points:
-the lighting you have is putting half the face in the shade, which doesn't make sense if you want to emphasise on the face/head
-keep your bases simple and neutral: it'll make them easier to edit and allow for more diversity
-asymmetry can make some characters more interesting to look at - too many small details will however make the design look cluttered

Here's an edit of the base and some ideas of what can be done with it:

Hope it helps!