It just comes natural. Trust me. At first, it's difficult no matter who it's with. It takes some time for the two of you to learn how each one kisses and how to move your lips, tongue, and all that good stuff lol. I was scared before my first kiss too and it turned out fine. Anyways it's not difficult and like the poster above said there isn't a right or wrong way, it just happens. Let him start off and just follow his lead and you'll be fine. You'll enjoy it so much you'll want to do it for hours, haha.