Hmmmm... I feel compelled to ask how old the model is. She looks a bit young.
Three is probably the best of the set, but if I can be perfectly honest with you, these are not your best work.
1- up the nose shots are almost never flattering. Well, never, unless it's a diagram of inside the human nose

2- the tilt doesn't work here, it seems like the fence is competing with the model for the spotlight
3- has the most potential of the entire set. I'd like to see more of their faces, a reflector could have helped illuminate
4- really not trying to be a jackass, so I'll just say it looks like she just finished giving... ahem, special kisses, and got caught
5- stiff pose, flat light, tilted horizon (or unlevel building
I get what you were going for, I think; the laid back, country summer "fashion." Like a Kenny Chesney music video. The biggest limiting factor, to me, is the usage of light. With so much blatant sex appeal, a softer "dreamier" light would have toned it back.