Kissing..for the 1st time!?

so..im14..the guy that im goin out with is 19..and ive nvr kissed a guy before really..and im kinda scared..cuz like what if i do it wrong??? so yeah i really have no idea how i am suppose ta do this or nething.. i wanna make out with him n kiss him n ****..but i dont know how!!!! HELP!! i really really really wanna kiss him..but im soo scared that ill do it wrong!