Interesting study. Rebellious looking yes, a bit short on eccentricity to accomodate your title however, the unbuttoned shirt adds some erose flavor to it, and the model is expressing a joyous look though.
I love the infectious smile! Lovely portrait. The white balance is a tad on the yellow side - I did a quick pass with a selective color layer, and took the yellow out of the red and yellow, then added a bit of cyan to both, and a bit of magenta to the yellow layer. Adjusted the neutrals a touch, too (minus yellow, plus a nit of cyan, minus a nit of black). Result is in my workshop for now: [thumb]699167[/thumb]
Fun and daring...but watch the background and also the yellow hue over the entire image...it is very noticeable over the teeth...play around with your WB.