The lighting's not very flattering and expressions (first two) look a little pained. Always good to try new angles though, and as long as she/you are happy.
Yes, but the lighting, color, skin tones, and angles don't do her any favors.
I agree. She appears to be very pretty and I am sure with the other photos you have posted you will be able to find poses that will be better. Also her skin tone should be adjusted or blended. This is not meant to be a reflection on your skills which are very good. It just that these photos of a great model can be improved. Keep posting
While not the most flattering pictures of her I do feel that as a figure study it is a good representation. The harsh lighting does serve to accentuate the flowing curves of her form.