good advice so far. don't bite, make sure you lick the balls some. taking it out of your mouth at some points and just licking up and down it can be hot. deepthroating can be a hot visual, but you'll get more stimulation paying attention to the tip and head.
and don't be afraid to use your hands too. I can have a girl suck me forever sometimes, but if she starts jerking me off in a good rythem with her sucking, i'm gonna cum pretty quick.
also, when the guy starts to cum, don't stop sucking. if you dont wanna taste it just take his dick deep so it goes right down your throat. however if you don't mind the cum, then keep sucking the head when he cums. it's amazing
and don't be afraid to use your hands too. I can have a girl suck me forever sometimes, but if she starts jerking me off in a good rythem with her sucking, i'm gonna cum pretty quick.
also, when the guy starts to cum, don't stop sucking. if you dont wanna taste it just take his dick deep so it goes right down your throat. however if you don't mind the cum, then keep sucking the head when he cums. it's amazing