I thought I commented on this one before. It's beautiful. The added machine part to the head looks cool. And I somehow like that light bulb in there. I don't know why but I like it alot with this piece. It feels perfectly busy.
It's really cool, I really like the greens you've used. The complexity is great, and the way you've managed to integrate the girl and the machinery is pretty much damn good
I just have two things to point out, though:
1/ The shadow of the bulb would either be directly behind the bulb or not there at all (possibly directly above). I can't remember which, and I could be wrong as i'm very stoned right now, but the shadow wouldn't be off to the side as you've done here (unless there was another bulb between the lit one and the wall). I understand why you did it though (at least, I think do)... shadows off to the side of the object seem to give things more depth, as though it's really standing out and not flat against the wall. A shadow directly behind the bulb wouldn't really give it that same depth. I have seen it done properly a couple of times (can't remember where sorry), and it does look great when pulled off, so do keep trying
2/ The wall when looking "through" the bulb is a different texture in relation to the wall directly around where the bulb is placed. There's a kind of bar/board thing stretching from left to right at a slant, and it goes behind the bulb and so should be visible, but it's not. There are also two cracked parts of the texture within/behind the bulb which aren't seen on the wall directly around the bulb. I'm not sure what you did with it exactly, but the thing that comes to mind is cutting out a part of the texture to fit the bulb and then painted the light over it. What I would suggest is cutting out the side of the bulb (the bit that you dont want, that is, not the filament etc) and then fade the edges about, or if you use photoshop you could try putting that bulb layer onto 'multiply' and see how that works out. Then you could paint the light over the filament.