C&C per req:
1. Definitely a warm/yellow cast to this image even on my less than stellar work monitor. If this was shot in RAW, try going back for a WB adjustment and cooling it off a few hundred degrees. The composition really doesn't do a lot for me, in fact the first thing that came to mind was, "Passport photo". Tight composition and flat lighting. She's a pretty girl with a nice expression, but...
2. This is a much better shot, but again too warm, and very even (flat lighting = even, lacking contrast/shadows, generally not considered ideal for portrait work). Some fill light on her face would have helped and added a catchlight to her eyes. Consider a reflector, even something as simple as white posterboard.
3. This is almost a good shot but too things bother me. First and foremost, the cropped elbows. It's fine to crop limbs when you have to, but if you do, do it boldly and NEVER at/near a joint, or along a lateral axis. The other concern is the washed out background. Here again, using a flash for supplemental lighting would have allowed a more natural looking background and more dramatic, contrasty light on the face. The image also leans to the left slightly.
4. A very awkward crop IMO; if you going to crop the thorax, do it either above or below, but never through the breasts. I think this would have been better shot in portrait orientation.
5. There's a really good shot here, but I don't think you've quite nailed it. Her expression says, "This is the last one, if you don't put that camera away after this, I'm going to break it!" While I'm personally NOT a fan of tattoos, I think you could have really used this one to advantage if you'd had her cross her legs the other way so that it was more exposed. I would also like to see the modern Coke machine gone; it really takes away from vintage diner feel of the image. Try re-shooting this and posing her such that she's taking a sip of her drink and using both hands (one on the base of the glass, one on the straw) and looking slyly toward the camera with just her eyes.
Overall, nice work but of course, there's always room for improvement.
Just my $00.02 worth - your mileage may vary.
~John