Now when you're blowing him remember the basics:
don’t use your teeth,
don’t suck too hard,
use lot of saliva on it,
if you don’t like to swallow his cum, have it drop down his dick and so on.
I like to have my tongue rub on his “clit” while I’m blowing him.
Sometimes I throw in a tongue twirl over his tip when I pull up my head.
I put my tongue on his clit when I put my head down while twirling with my hand (which I have on his dick the whole time while sucking him).