How do I give a bj?

Ahhhh I feel really embarrassed to ask this, but today I met with my boyfriend (sorry, we tried social distancing for two weeks) and... well... he wanted a bj sooooo.... yeah. But it was kinda awkward, my teeth touched it a little, I didn't know what to do with my hands, and at the end he just used his hand to cum. I feel kind of weird and disgusted (is this normal?) but I want to know how to make it feel good for him since he probably wants to try it again. Sigh. I just want to be a good gf since he's pretty hot and popular (and soooo talllll he's literally more than a foot taller than me and I'm 5'4"!) and I'm just a nerdy dork.
Asdfghjkl I can't believe I'm asking this, but please help! <3