I see potential and a few quite nice shots but there are a few things you can do to make it better.
I agree a lot of your images are centered.. Like in the middle row you have two centered, walking in some grass photos right beside each other. Go for variety.
It's cropped too close to her foot and I find the boards going vertical to be a distraction and not an addition to the composition. It'd be stronger if you cloned them out.
Shot #8, the blond woman in the see through vest.. I don't think it's a shot that really maximizes her body shape. She doesn't look fat but she looks very shapeless, especially since she's got no bra on, her shoulders are rounded down, her arms are soft and her chin looks weird too.. did you do some photoshopping there?
Just watch the small things..
Keep on shooting!
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