Most Helpful Girl
you need to tell her how you feel.
Most Helpful Guy
So, the right and smart thing to do here, is to make sure that she's not crushing on anyone, because if she is, you're already in hell.. i mean.. Friendzone,
Second; Make her fall for you, before she finds out you like her, it's a bit psychological but girls think like this, and like the guy usually who they can't have. So if you show her you're a choice, you lost the game. After that, talk to her in private, and tell her how you feel.