I’m 18!! And still haven’t had my fist kiss

There’s a guy 2 years older that I’ve been talking to and my friend has been wingmaning me lol! He wants to get with me and I do too I’m just really nervous because I don’t know how to kiss and I don’t want to embarrass my self

Please genuinely help, I know the more I think about it the more of a big deal it will become but I genuinely just want to know what to do