Guide on Giving Your Man a Best Blowjob
Tease him
Tease him with kisses down his body, nibble his thighs a bit and run your nails along his inner thigh. Right when he thinks you are about to take him in your mouth, slide your body back up over his and resume passionate make-out.
Eye contact
Try to keep eye contact as much as you can. When you deepthroat him, keep eye contact. When you lick the tip, keep eye contact. Keeping eye contact does so much more than you may think. It's ok if you don't look him in the eyes sometimes if the position makes it difficult, but try to do it as much as you can.
Deepthroat
If you can deep throat, do it, if not, still do it but every so often throughout the process. Take him as deep as you can, but don't make yourself uncomfortable doing it.
Watch out teeth
Be sure not to hurt his balls/shaft with your teeth, although some guys like teeth, please do not bite so hard, try to be gentle and slowly bite.
Open communication
Watch and listen to him. Do different things and watch his reactions to learn what he likes most. Or better yet, ask him to tell you what to do. Communication is the key here.