Weird question but I need help😬

I’m going hammocking (it’s a thing in our town lol) with this guy on Thursday. Hammocking=making out possibly more. I’ve never made out with anyone, I’ve literally kissed someone twice and it was less than two seconds. Fortunately, he seems fine with the fact that it will be my first time, but still, what exactly do you with your mouth. Like I can’t believe I’m asking this but I’m just nervous🙈