I know very little about digital art, but I can say that what sticks out at me is the amount of detail you've put into things, such as the iguana's eyes and the values in the little skull things around her(?) waste. I don't have much to say, other than that. It might be cool to see a fuller background...that way you could spread things out a bit. They seem just a tad cluttered, right now. Oh, and the perspective is really well-done...it feels like the lightning bolts are coming out at me.