Yikes!
Hopefully you won't think I'm a troll right off the bat because of the bad grade I gave you; this is my honest opinion about the drawing. All of my other reviews on drawings have been received as fair so far...
I think this drawing died with the background.
Since all the white splotches are equally spread throughout the drawing, there is no focus on whatever's going on in the middle. Basically, you should crop the drawing to around your drawing and that's all. I suggest even getting rid of that obnoxious background.
Everything else about the character itself is rudimentary at best. The anatomy is off; both arms need to be completely re-worked, her torso is not aligned on her hips, and even the wings are very bland and have no structure. There are lots of improvements you should do there before even starting to color.
Keep drawing, but you should do more stuff on paper before attempting CG drawing. I think you slip too easily into cheap automatic effects and filter rape, which removes a lot of the value of your work.
On the plus side, I think your signature is interesting. I should work on my own >_<