What can i do to make this guy notice me?

Ive liked this certain boy from afar and I liked for a very long I mean he does know that I do excist, and he find me a kool person but I want more then that I want to be with him but i cant just go up to him and say that I want to be with you I would be to nervous and I just want to know what can I do to make him come to me and notice and like me??