I like these good all round shots, solid but could be improved
1 fine but needs more expression from subject, bridge distracts even of out of focus
2 & 3 framing I feel could be better but like idea and lighting
4 legs need to be to one side or other
5 maybe focus on eyes rather than leaves use of wider apature
In #4, try a little higher angle, so it's not so much "upskirt", It's not bad at all, and I don't see anything that even a very conservative bathing suit wouldn't show, however some folks may get hung up on it.
There's suggestions to build a pose from the ground up, even if the feet aren't showing, or the person is sitting.
Your flash is just too much for me. It doesn't create enough mood for my taste. It actually ruins it. Try softening the light more and controlling the spill better. It needn't light the entire person.
