I want to kiss my bf but idk how can I

I've been with my boyfriend since high school sophomore year.It's been about 1 year and 4 months,I've never had another relationship before,So this will be my first time, but I don't know how to do it, I don't want to mess it up.I would appreciate if you guys could tell me what I should and shouldn't do.🙏

(Sorry for bad grammer)