Take this with a grain of salt because I've never done this kind of photography. But, they're static and centered. And, it looks like you shot when the sun was really high in the sky. In number three the light hits her from her back left and her front is in shadow. Maybe fill flash or reflectors? (did you use fill flash?) I'm loving the color in the first one. However, it seems a little silly that she looks like she's enjoying some nice, refreshing, imaginary water. But, there is more implied action there than in the others and she is interacting with the environment! They're all from roughly the same angle with the exception of the first one which is from a lower angle. And, I think that does wonders for the shot. It really shows her body nicely. I like where you chose to shoot these. (just not when you chose to shoot them) I wish there was some water coming from that fountain you could get crazy with! That'd be awesome.