Ooh, very nice rendering on the armor.

Hmm....Luna herself seems to be fading a bit too much into the background though. She seems to be made out of a completely matte material that has no reflection at all, so she's not picking up very much of the light.

Hmm....another possible way to fix it might be to create a weak, maybe even different colored back light so that her face has more of it's shape visible and defined.