C&C per req:
1. Interesting framing with the rock formation. A few thoughts: Consider your backgrounds when making clothing choices for a shoot; in this case her white shirt is getting lost in the background, and the hot areas are drawing the viewer's eye away from her face. Also, pay attention to the detals. Two seconds with a comb and her hair would have looked much better.
2. The crop and pose seem very awkward to me. Her arms are amputated at the wrist, and both legs appear to be cut off at the knee. I think if you'd opened up up on this one a bit, and had leveled it, it would be a much stronger image. Cropping limbs when necessary is fine, but do it boldly and never at/near a joint or on a lateral axis.
3. Why a landscape orientation? The dirt and trails really don't add much to the scene, and the subject isn't nearly as prominent as I would prefer.
4. Agaain a tilted horizone and the white shirt drawing the eye away from the face. Also, when posing, especially with females, don't have them turn their head so far that all the sclera on one side of the eye is obscured. You really want to see at least a little bit of white on both sides of the pupil.
For future reference, try to limit images to four per post for critique as it does take a bit of time.
Just my $00.02 worth - your mileage may vary.
~John