Help!!! I don't know what I'm doing!!!

So I feel awkward for asking about this but I figured what better place to ask than here. Does anyone know like how to "please" your boyfriend without giving a BJ, personally I'm not a fan of them and I don't want to try giving my boyfriend one because that makes me uncomfortable not to mention I have a really small mouth. I just desperately need tips in general on how to do things when it the time comes and the mood is right. I've only ever had sex twice and both times I was completely clueless on what I was doing and felt ashamed and embarrassed because it's like I don't even know my own body I don't know how to figure out and express what I want to do that would make me feel good as well as my boyfriend at the same time. Could I maybe get some help and tips on this please? I'd really appreciate it ❤