Truthfully, not too sure. Her bellybutton has a weird shape, probably due to shadowing, her left boob is tucked funny in the sports bra (which draws direct attention to her cleavage, but it would be drawn there anyways b/c it's center of shot lol), her facial expression (duck lips) isn't very flattering, and being REALLY nitpicky lol is the headband that's folded a bit.
I like the pose and center composition of #1 and the pose and background of #3 (besides the shadows)
#2, her left arm blends in with the walkway on the back, throws the shot a bit (at least for me)