How to dress up like a hard core person in high school but also look sweet and Feminine?

I'm going to high school! I don't want kids to think I am weak and nerdy so I want to dress kind of rebelious like don't mess with me but also not scary but kind and easy to aprouch. People are always judging and I don't want to deal with their bull. How should I do my hair, makeup, accessories, and clothes? Like Dara in the music video kiss at the end.