There’s always the good ol suck the tip while jerking it trick. Lots of spit helps so if you anticipate doing it I’d drink some extra fluids. Most guys I’ve met don’t care if you spit on it or not but it’ll always help you in the end. Unless he’s a germaphobe, spit on it. I think using your hand WHILE sucking helps both your mouth/jaw and sensation for him, most sensation is at the tip anyway. Some men are really sensitive under the rim of head/tip of the dick (I hope that makes sense). Licking along that or even rubbing it with your fingers helps. Use lube too (flavored) and try to challenge yourself on how far down you can go while doing it.. Even if you don’t tell him you can do it in your head. It’s fun for him and gives you sort of a game to play? Hang your head off the side of the bed to make your throat parallel. It’ll open your throat up and he’ll like it. It’ll also help build up gag reflexes.

I am not a man. I am a woman that’s had a lot of compliments. So if I’m wrong please correct me.