Kissing tips pleaseeeee!?

Soooo, my youth group is gong bowling tomorrow and my boyfriend is going and wants to sneak away and kiss me. I need some tips, I'm kinda nervous because I really like him and I dont wanna screw this up! so when should we sneak away and what do I do before and after? likee I'm just excited and nervous(: idk, and dont say that I'm too young to kiss a boy and stuff cause thats not gonna stop me, I'm 15 d: haha, so yeaah! thanks in advance people! :D <3