the most important thing about head is that EVERY GUY IS DIFFERENT. before you worry about technique, learn your partner. learn what he does when he's stimulated and aroused or, learn his mannerisms when he's annoyed or indifferent, this is THE INDEFINITE KEY to giving the best head. nothing you do matters if he's not enjoying it. some guys may be shy about telling you what they enjoy and what they don't so whatever techniques, tricks, etc... you use, PAY ATTENTION TO HOW HE RESPONDS. if he seems to like something, take a mental note that he likes that particular behavior. if he seems put off by something you do down there, make a mental note that he doesn't like having that thing done. there's a million things you can go while you're giving head, what makes you better than the rest is learning and capitalizing on what the individual likes, some guys HATE teeth use, my boyfriend loves it. i've sucked some guys who want me to go down all the way (deepthroat) or they won't cum, some guys cum just by me manipulating the head with my mouth and going no further. it's good to learn all the tricks but useless if you're not recognizing which ones your partner likes and which ones he doesn't