Blowjob

I really want to give my boyfriend the best bj and Im not that bad on giving bjs but I feel like there’s room to learn more on how to pleasure him but I’m a little unsure at times what I should do. My boyfriend is also uncircumcised and I don’t know if there’s any difference between circumcised or uncircumcised with pleasure and knowing what to do with him being uncircumcised since I’m unsure about that