how can i put up my hair in a rock chick style???? my hairs up to my shoulders but with layers what can i do ??

Just adding accessories to your hair will do the trick. Different hair clips and some headbands would work. Hair gel and a straightening iron can help out too.

And if you want to dye your hair, dye it black. Get sidebangs too. With the sidebangs, get platinum blonde and red highlights for your sidebangs. But if you don't want to keep it like that forever, temporary and semi-permanent hair colors are the way to go.

Just look here for hair accessories as exaples:
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