Well, we almost got through the set without the ubiquitous 'pretty girl leaning against a brick wall', but not quite...

Overall, they're a nice set, good focus, good exposure, and suitable poses. Two points come to mind: (1) These images tell us nothing about the person; what she did, what her interests are, etc. I find this sort of imagery far more appealing when we have clues to the subject's personality; and (2) your cropping/framing leaves something to be desired. In #1, she's crammed to the left of the frame, with her body pointed out. Generally, we want to see people moving into the frame rather than out of it. In #2, you've got her dead center in the frame, with a large, blown area, image left. I would prefer to see her off-set to one side and as much of the blown area as possible cropped away. The human eye is always attracted to bright over dark, so that simply serves to pull the eye away from the subject. #3 wouldn't normally work since posing subjects, especially young women square to the camera ("Football shoulders") is considered a no-no, but IMO, I think the wire and her arms make this a nice image. I would crop one side to get her off-center. Don't forget that your camera works equally well when tilted 90 degrees to the left/right ("Portrait" orientation).