1st pic. I think it could've looked better if you took the picture more from the right and she looked at you. You cropped the hair and part of her arm.
2nd pic you cut her foot off, there's too much space on top and I agree with the window comment above.
3rd the things in the background are distracting and not very flattering I mean I can almost hear the flush
also she looks uncomfortable there, too tight and her armpit looks fat.
In other comments I think when working with models you have to pay attention on the makeup as well. For me her face is not interesting I would make the brows a little darker so her face has more definition, maybe gloss on her lips or darker color would help her expression to be more interesting.
Hope I helped a little
Starbit