You should try blurring the background using DOF (open the aperture). As they stand, the shots have a lot of background elements in sharp focus, which can be distracting.
You got a nice DOF effect in this shot, for example;
OUTSTANDING! I love it! I might clone out the people in the background-- well I might replace the wall with a large bridge or cliff and photoshop a bungee cord around her legs - but that's just me. Great job!!