First Kiss Nerves

I’ve never kissed anyone before...

I’m 15 and I’ve had a boyfriend (pretty recently, too), but we didn’t kiss. When we were dating, he even told me he wanted to be my first kiss, but I️ was just so embarrassed when he said that, I️ told him I️ actually had a first kiss before... We broke up by the way, totally unrelated to that incident so I’m single right now. But anyways, I’m just so worried that I️ won’t know what to do when I️ do kiss someone, and it’ll be so awkward since I’m kind of late to the game, I️ guess. Any advice??