I think it's a good photo. Pretty girl. You did a good job with what looks like strong backlighting.

Since it is a critique forum, I looked a little closer. My first thought is the finger in the trigger guard. I've been around enough gun nuts to know that is a "no-no." The was she is holding the gun doesn't look natural either. In fact, I would have preferred her holding it down more causally and keeping it from dominating the photo so much. The fingernail polish looks out of keeping with a gun-toting hottie, too.

Like the other posters, I found myself looking for her belly button.