What to wear if I'm new to punk?

I want to start dressing punk, but I can't do anything to my hair (school policy) and my parents won't really approve if I do. Can someone please tell me some more modest punk styles and what I could wear. I have limited clothes. Are band tees, ripped jeans and high top platform converse ok? Someone please give me advice on what to wear if you can. I forgot to mention, I'm also new to the punk style.