1) Love them all, but in the first the girl is spectacular. Her shoulders may be up, but the expression and genuine emotion in her face and the beautiful hair lights are just great!
Truthfully if I could paste the first pose onto the second and third background, I would, LOL!!!
2) I'm not fond of the arm over the knee and crossing the body, honestly. But the background is killing me!
3) If her chin were up slightly it might work better. Almost looks forced with her head down like it is. AGAIN the BACKGROUND!!!!!!!!!!!!!
I do love the lighting in all of them!
Excellent work! Beautiful model!