I'll not repeat what's already been said, so skipping those things, here are some essentials I've found along the way. . .
1. Lots of saliva
2. Quit taking it out of your mouth
3. Suck gently and steadily, not hard
4. Balls seem to like to be cupped and rolled in ones hand more than actually sucked on or licked, it's just awkward to do both (hold in hand) at the same time without seeming like you're trying to push them up into him. Always sort of variable really, especially if his sac is tight instead of relaxed and loose and softysoft like ponynoses.
5. If he has a circumcision scar, try your best to take it in deeper than that
5a. If isn't circumcised, draw his foreskin back slowly, and be more gentle with the head, it's bound to be more sensitive than a circumcised penis'
6. Don't make false gagging or exaggerated moaning sounds, his ego may be fragile to fake news, be natural
7. Don't stop until you begin to feel it in your jaw or he comes, either is the only proper hint that fellatio is done for now, other than him wanting to put it elsewhere
8. Enjoy it! https://youtube.com/watch?v=F2ZnCrUvvKA [Embed]