Cool shot. Her head seems really tiny compared to her body. I wonder how this shot would look if her legs were posed differently, right now, her left leg looks a bit awkward to me. And, since she is staring right at me, I wish there was more light on her face. If she wasn't making direct eye contact I might not care as much. It is probably the lighting, but she appears to be a little cross-eyed as well. She is a very beautiful model, I'd like to see her in more of a feminine pose and more space next to her left arm.
I like the lighting, and you have a great model. I'm not sure about the pose though - something seems off, but I can't quite put my finger on it. Her top and bottom halves seem unbalanced somehow.