Most Helpful Girl
Maybe take her to a table on your own and sit down with her and talk for a while, get comfortable, then compliment her on how she looks or something... Maybe 'You look really beautiful tonight' and touch her cheek or tip her chin up. Look into her eyes then for a second and then lean in slowly. She'll either lean back (in which case you stop because it's a pretty big hint she doesn't want to kiss you) or remain where she is or move forward to meet you. Either of the last options are probably fine, you can move in a little faster then and kiss her. If you want to make sure it's cool, you can just quickly double check and ask her if this is okay, but if she's letting you, it probably is.
Most Helpful Guy
What worked for me was I put my hands on each side of her face and went for it