We call this top jerk off technique landing the helicopter because you have to grip your cock like a joystick and sway it in a circular motion in addition to moving your hand up and down to get the rhythm. With enough practice you may be able to climax just by using the circular motion.
To perfect this guys jerking off technique, grab your cock in the usual way, once you have the rhythm of the up and down movement going nice and stay, start to introduce the circular motion too, like you are guiding the helicopter down in his winds.
The beauty of this helicopter ride is the big crash landing at the end, but you are not going to land this baby without careful attention to your jerk off technique and it takes time and patience.