Comments per req:
1. Good picture, well exposed. Not fond of the hair over the left eye or the extreme angle (however I know many people do like them).
2. Nice picture, great work with the reflection, BUT she's lost in the picture. Crop out most of that unused space so we're looking at her and the reflection. I would suggest a landscape aspect vice portrait.
3. Nice, again however the hair doesn't work. In real life, I'm sure it looks cute, in a photograph, it looks like she's got a black eye.
4, 5. Nice, but too centred and the background is too sharply focused. Open your aperture up so that you have a nice, soft background, and try and compose so that it's all one colour, that is you don't have her partly in front of green, partly in front of sky (#5)
6. Very nice, my favorite of the lot, a little bright in the highlights, but that can easily be fixed in post. As a general rule, try to have empty space in an image in front of, rather than behind the person; in this case she's too close to the RH edge.
Overall, very nice work, with a few minor niggles. If you don't already have them, I'd suggest the purchase of a polarizing filter and a couple of graduated neutral density filters to improve the sky and overall colours, but again, those are minor iusses.
Just my $00.02 worth - your milage may vary.
~John