start youre spin with your shoulders when ur near the lip of the jump but keep your hips straight. pop on the lip and continue the same motion through the rest of your body while looking to the side ur spining. spot ur landing and stomp it. if u wanna grab dont start the grab until about 180 for 3s 270 for 5s 360 for 7s etc other wise it can throw ur rotation off
if u spin to ur left(natural) look over tht shoulder as much as u can. and grab your left skis tail with your left hand and it will make you spin faster.
I'll just say, posting on NS will not make you spin 5's. What will is doing more 3's, pop 3's off of everything and eventually you'll just do a 5. It's a sudden breakthrough.