glitterho some good BJ advice for you now from me, lets get this back on track
Also, to all the posters who have been upset with GH vocabulary choice, she has apologised, and yes they are shitty terms to use.
This is a bit explicit, so please do not be offended 
Tell him, you want to give him pleasure, but he needs to help you out.
Start with some kissing on the mouth/neck and so on, play with his penis with your hands, move down kissing his torso. Gently and slowly put just the tip of him in your mouth and give it some light sucks/kisses/tonigue, look up, look him in the eye, and ask him if he likes it, ask him if he wants it- faster/harder/more hands, less/more wet and so on. Try different things, keep asking him if its good or not, not in a demanding way, more in a sexy/playful way IYSWIM?
The whole full face f88king is a bit of a porno myth and IME it is more about a good hand action combined with a wet, good sucky mouth. If he is into you making noises all the better.
Once you have pleasured him, it's his turn, and again, lots of questions, lots of yes thats good, more/less of this that. HTH
Oh and the spit/swallow thing- decide what you want to do before hand, as if you do not wish to swallow, then you will need a heads up!