[header] How to talk to a girl you like for the first time [title] Make eye contact. [step] Spend a few days catching her gaze every now and then. Don't just stare at her, though; instead, shoot her small glances until your eyes meet and she catches you. 
When she does, smile slightly and look away after a second. You'll probably blush as well, which is all the better-blushing indicates you're nervous, which is a hint that you like her.