Whatever you’re comfortable with love. In my experience, most guys find it a turn on when you swallow, but I know a lot of girls what aren’t really comfortable with it. Me myself, I think it’s just easier than getting up and spitting into/onto something and kind of ruining the mood I guess?
And you’re probably going to be awkward if it’s the first time that you’re doing it, I mean, it’s something new and you have to find what he likes and the places that feel the best. Again, a few things from my experience. The underside of the head is really sensitive….use that. Kisses and tongue and yeah, it’s a nice place that you maybe wouldn’t expect? Also, and idk how comfortable you would be with it, but ball play can really make a blowjob an experience. Most likely he’ll let you know what to do more or less of, and you can do the same with him. If you want him to grab your hair, put his hand there. It’s very hard to go wrong with a blow job, lol. Just make sure not to go past your gag limit bc that does not turn out well