Effective use of spot coloring. Maybe on her right arm, make the lines actually cover up the lines on her shirt so it looks like the background is a solid sheet wrapping around her arm. Not sure how this will look, but it might turn out OK. Her face where her chin is looks a little funny. A bit blocky and gives her face a little bit of chub. Also, the gun she is holding, it seems as though it goes from a very 3d looking weapon from the handle, to a flat looking gun above her hand. The only other thing I could point out are her sunglasses. They seem a little bit strange. Aside from this list of things that could be modified, this is a very effective piece. One of your better ones. It took me a while to come up with some places you could improve on this.