The torso does bug me a little bit, like some of the other commenters. I think it's because of a few things: The equipment strapped to her back is barely discernible in value from the torso, and is positioned such that it makes the torso look thicker. The shadow shape that falls on her right arm, along with the little fold on her torso clothing just below her right arm does imply an oddly low-hanging bust, to me. Maybe that shadow and shape is supposed to be because of some more equipment hanging on her, like a shoulder holster or something, but it's hard for me to tell. I think the smoke from the gun in her left hand may be reading to some as modeling of the torso, as it did to me for a moment, thus leading to some odd impressions of her torso shape.
Her right arm bugs me a bit because of the tangent formed by her right elbow and the wall. Also, the way the forearm is foreshortened (along with the scarce definition of her hand) had me thinking for a second that she was a cyborg with a missing forearm; at first the gun looked to me like it was sticking out of her arm, as the remnants of an endoskeleton forearm. Does that make sense? Maybe it's just me who sees it this way.
Anyway, I know it's a quickie, but if you worked out some of the details of the rest of the body as thoroughly as the face, I think it would work better.
Wow. I wrote a lot. Sometimes I can't think of a thing to say (good or bad) about pieces, and sometimes I just won't shut up. As always, it's easier to be critical than to explain what works and why in a piece, at least for me, so I don't mean to sound like I am "ripping you a new one" here.