If you want a girl to notice you, you should ask yourself if you actually desire to go after this girl. If you like her, give her a try and make the first move. Girls like a confident guy. If she plays a sport, show up, it lets her know you care. Just make sure she's into you first.
Talk to her and be yourself this might be the worse thing you can her is I personally like to know or be friends with the guy before we start dating your probably screaming now how this is the FRIENDZONE lol good luck!!