Nice. I did one of those too; it's a really cool model. My biggest critisism would be that the chair is a very similar value to both the boots and the purple bits of her. Mostly the boots though. Anywhoo, I would probably highlight with a slightly lighter layer of grey/purple or whatever you're using, just to make it pop a little more. As a much smaller note, maybe a few more highlights in the hair?
Awesome job though.