Bam, you darn ninja.IndomitableSam said:Follow the script below, and alter to your needs:
"I've seen you around campus and I think you're very (pretty/interesting/outspoken/compliment it seems she'd appreciate). I don't want to be creepy, but is it ok if I give you my email address/number to text? My major is _____ and I (hobbies/sports/whatever so she knows you're not a loner or whatever you've seen her interested in), and maybe you'd like to come (watch/participate/etc) sometime? If you're interested, here's my email." And hand her a scribbled note. Don't ever have it pre-prepared. Creepy as shit if a guy pulls out something with his number on it. Just have some paper folded in your pocket, pull it out, rip off a corner and write down your number. Then it's up to her. Just be charming and casual about it, like you might ask other people, but you do really want her to be there.
Yep, give her your number and leave it at that. 9 times out of 10 they'll at least contact you, then you can take it from there.