I want the textures from 7 >.>
1 is decent, but really to bright and a little boring
2 looks like it got off to a good start but was never finished
3 I love the background. but the chick seems like she doesnt belong.
4 is nice as far as compo and smudging.. but B&w smudge? kinda lazy huh
5 is simple and would be good if the line thingys contrast wasnt so far off from the rest.
6 is just a horrible clash of colors. nothing nice to say.
7 is great. good focal flow etc w/e. the colors could use some pop.
8 would be great if you removed the half of the chick in the left and worked on blending in a little more and filling space.
yeah thats right, i cnc'd all your crap.
My vote is #7 good luck guys 
another issue, the chick makes a poor focal. no eyes mouth etc. A "synthetic" focal is key in the render.