A good blowjob is like a water park log ride.
Start out slowly up and down the shaft getting it wetter and wetter and slippery. You go real quickly down and slowly go back up and then spin around the head flicking your tongue carefully teasing. Continue playing it like a harmonica down the sides carefully grasping the sides just working it working it. And then you go in for the kill with the final plunge into to a giant splash down.