How do you make out?

I was kissing this boy and he randomly stopped and said i wasn’t doing it properly. And after that I just felt uncomfortable and stopped kissing him. But now I’ve met someone new and he wants to kiss me but I’m afraid he’ll think I’m a bad kisser. I wanna learn how to french kiss, but how? I also wanna know how to kiss his neck the right way. I’m scared to make it too wet or make him feel uncomfortable 😩. I literally don’t know how to do anything and I’m 18 😭. Please help