I think the poses are nice. Looking away from the camera creates a totally different feel, for some pretty deep-seated reasons. I think it cause us, the viewers, to inspect the girl and the environment a little more closely, so be aware of that and consider the environment she's in a bit. Make sure there's something for is to look at.
She seems to have been shot in open shadow in all of these, the middle one most obviously. The color/light isn't quite selling for me here. It feels like you've lifted the levels a little (in post, or possibly just with exposure) and warmed things up a bit. Her position and the surround says "shadow" but the colors and tones disagree, subtly, so it's not quite working for me. This is a very subtle issue, though, a minor quibble.
I prefer slightly more dramatic lighting on the model, myself, with some shadows and modeling on the face, but that's just me, and it's also hard when you're shooting natural light (or were you filling subtly from the front?)