Damn, but that's some great lighting! This is precisely what we were talking about, dude.
Her hand especially looks great. Cool design too.
I agree with Star that the back disappears a bit. Some subtle backlighting would indeed fix that, or you could also go in the opposite direction and enhance the effect by getting rid of the slightly brighter background elements. IMO this image might well benefit from more chiaroscuro.
Still, this is probably your best work to date. Good job!