How do you pull of sam from Danny phantom?

Answer 1

If you mean in real life and all of the time: become a vegetarian and go goth.

If you mean cosplay:

Hair: jet black, shoulder length, with straight bangs and a little ponytail at the top of your head (green ponytail to be exact).

Outfit: black sleeveless top (stop above the bellybutton) with a purple oval over the chest / black skirt with neon green grid pattern / purple leggings or stockings / black combat boots / medium thickness black choker and a black bracelet on each wrist.

Make up: matte purple lipstick, optional -- she's been known to wear purple eyeshadow from special occasions, also darkening your eyebrows if you are dying your hair black or wearing a wig and thinly lining your upper lid will add a goth effect to your look (lining the bottom waterline is okay, but don't make it too heavy, Sam's look does not include a lot of make up). In the show nobody really has finger nails, but black nail polish couldn't hurt.