First kiss

So yall, i met this boy, were meeting for the second time tomorrow. The first time we met i didnt wanna kiss him bc yano how 18yo boys are🤷🏽‍♀️ wanted to see if he was actually serious and turns out he is. So tomorrow i wanna go for it, but im anxious. Ive only ever kissed one other person before and im worried hes gonna think im bad at it or something. Anyone got any advice how to get over this anxiousness?