The sky doesn't add anything to this image, so I probably would have cropped tighter on the model, using a shallow depth of field to turn the background into beautiful tones of gold. I do like her relaxed, turned-away-from-the-camera expression.
In my opinion this is just too bright; should have been taken at a different time of day. I also think that she is just slightly out of focus. (And I would have probably had her wear high top western boots - but that's just a personal choice.)