Give it a good licking first, down the whole shaft and include some ball sucking first. Spend time tasting the lovely precum. Then slowly open your lips around the head and take it very slowly, sensing every centimetre as you go deeper. Try and deep throat but work up to it gowing deeper each time. Also caress the head with your tongue and if it is an uncut cock probe the foreskin. That part is magic. When you reach the climax be prepared for the warm cum jet, that is so special as you feel it jerking and throbbing. I love squeeze his arse cheeks at this moment and probe the arse hole. Enjoy it!!

Relax and let yourself enjoy what you are doing. Orally explore the cock all over. Take your time especially while testing your tolerance for deep sucking. No teeth ever and lots of tongue. Stay with it to completion and swallow then lick him clean. Repeat in the morning as needed.

Dude, start with what you'd like, then ask what he'd like!!!

Suck! 'Blow' is only a figure of speech!