C&C per req. Since these all share common issues, I'll critique as a group rather than individually.
Centered composition is less than ideal for imeages like these, especially because the background is so cluttered and distracting. Consider using long glass, a larger aperture and moving back from the subject. When positioning the subject, avoid placement which will result things like trees and telephone poles growing out of the subject's head. As mentioned, you seem to have missed the focus; her leg is sharp, but her face is soft, and under-exposed. An off-camera flash and diffuser or reflector would have added the necessary light to make these really nice images. Additionally, I would lose the vignette, it's competing with the existing exposure issues and not really addding anything. Lastly, don't forget to level your images in post.
Just my $00.02 worth - your mileage may vary.
~John