Those solid green eyes need tweaking, they're too .. solid. ish. Something like that. Try throwing in a highlight. Anyways, a good start, but the colors aren't very interesting, and there are some general contrast issues. Your color ramps are completely straight and don't have much reusage/interaction between ramps. Try reusing a dark color in more than one area, for example. Also, feet are disproportionate to the rest of the body. General pose is alright, though