I know nothing so take this with a grain of salt but the fact that her face is shadowed and her sweater is not, makes her "nippleage" more obvious for lack of a better term ROFL
I kinda wish there was a tad more light on her face to soften the contrast between light and dark, but it doesnt bother me that bad... she has a great face, hair and make-up and i dig the pose too. Nice work!
As for the technical stuff I would put a grid on the light so it would hit her and less skin and bring the face up a stop or so. The pose and look are very good.
Just a bounce card to reflect some fill in her face would have popped it...even a little bit. Needless to say she is very beautiful..lovely, symmetrical features and nicely shaped face.
The pose in the first is killer; the flat light in the second showcases her face beautifully; also a nice pose.
I'd crop her shoulder from the right side in the last one. It is drawing away from the rest of the image.
Also I feel you should rethink the lighting so that yer catching her eyes more...some reflection up into them would be nice just to put a catchlight in them.