Make sure that both you and your partner are comfortable. Lubricate your lips a little bit, preferably while looking at him giving him a sultry glance. Slowly take the head of his penis into your mouth; the best tip that anyone can remember when learning how to give a good blow job is to always cover your teeth with your lips! Teeth on the penis are rarely welcome..ouch..so be careful. Another good idea for how to give a good blowjob is to move your tongue around in circles around his penis. Licking up and down alternating with the circular motions is a great technique and it will give your mouth a rest, too.