C&C per req:
1. The pose is fine, albeit cliche, however the background ruins it. To get this shot, with this background, use your lens wide open at the max tele end vice the widen end and back up. Remember, DoF is much greater at wider angles.
2 - 4. Nice, but slightly under-exposed and the appearance of her legs under the water isn't working for me. Perhaps a different angle?
5. Expression ruins this one.
6. Not bad, as per 2, suggest cropping the bottom off. As well, 2 through 6 are all too centred for my taste.
7. Not bad, would prefer her right arm in the image, and it needs a leveling/perspective correction. Normally I'm not a fan of looking up at the subject, but you've pulled it off here.
8.I actually don't mind this one. Might be worth compositing a different sky in.
Good work for your first crack, but I really dislike the cammo bathing suit. It might work if you're shooting her against a background of monster trucks, but not in these scenes, and, lose the high-heels!
Just my $00.02 worth - your milage may vary.
~John