When it comes to giving a blowjob 'correctly' and him finding it super hot, enthusiasm trumps all. Whatever you're doing, looking like you're enjoying yourself will make it feel a million times better. So just look like you're really into it, ideally actually be into it, and you're halfway there! The mental aspect of knowing the girl has your dick in her mouth and is not only genuinely enjoying herself, but wants to do what she can to let you enjoy it, will make ANY guy feel like a king way more than any porn-star quality techniques.
Focus mostly on the head. The shaft itself doesn't have that many nerves on it so though paying attention to the area as a whole feels good plus builds anticipation, make sure to flick/lick around the head when you're coming up. It's a good way to maximize surface area being touched to just put the outer fourth in your mouth, swirl your tongue around it and the head, while paying attention to the shaft/balls with your hands. Two birds with one stone!
Most guys like some ball play. Start gently, with just barely making contact with your hands to feel out this particular guy's sensitivity to pain down there. Once you've got that taken care of, it feels good to suck on one ball at a time, though again not too hard as it's quite a delicate area. Most say to minimize hand use during a blowjob, as they can give themselves a handjob the best. But as long as you make sure to incorporate some mouth action, I'm sure you'll hear no complaints.
My guy loves it when I get the whole shaft nicely lubricated with some spit at first before paying attention to just the head & last 1/3 of the dick. Don't forget to include lots of tongue action here, like swirling, etc.. While you're doing that, right under your mouth, work the shaft with your hand. Moving up and down in tandem, or doing twisting motions works well. Another variation on that is to work the last 1/3 with you hand, doing a twisting/stroking motion with extra stimulation on the head with your palm when you move your hand outwards and at the same time, pay attention to his balls with your mouth.
Here's a link to some tips:
www.girlsaskguys.com/.../a7404-blow-jobs-tips-from-a-deep-throat-queen
There's plenty of videos for that and the more practice you have the better you're going to get
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