First one is great, but I think the background can be more blurred to draw more attention to the model. Second kinda leads to no where... as in, I don't know what to think about it when i see the photo. With the same posture, you could try different more dramatic angles to create more interesting compositions. The third one seems that she's trying to add some different characteristic with her expression, but I think it needs to be more polar to draw the emotion. Overall, I like the texture feel of the photos. Is this 35mm?