How do you make my crush like me back?

First of all, be yourself. If your crush doesn't like you for you, he's not worth liking. Second, find out what your crush is interested in. If he/she was interested in Basketball, ask her/him about upcoming games or whatever. Be funny, and bring out the talents you know you have. Pretend you are his/her best friend, cheer them up when he/she is down, tell them jokes and stories. If you just be yourself, your crush will notice that. If you are a funny person, he/she will notice your humor. Nice, same.

Just be yourself!