What happens next?

How to look and act like rosalie hale
Go to the beauty salon, and dye your hair golden blonde, or a light blonde.
In the books, her hair is golden blonde. This is only if you actually want to look like rosalie, not nikki reed.

OPT:
a). Don't get serums or white goop, just brown. Get braces to make your face look skinnier.
b). If your hair is any blonde but dirty blonde, don't get it dyed. If it's dirty blonde, use john frieda blonde go blonder shampoo and conditioner, and the lightening spray.
c). Always get the clothes you like, and wear it all. Don't copy your favorite friends' clothing, and don't try to bedazzle them with glittery jewelry.
d). Also, you don't have to dye your hair blond, but to opt for specific shades wouldn't hurt. If you don't want to dye it it blond, you can just cover it with foundation and a bit of black eyeliner if you want to.
b).