The best way is an intensive program involving neck muscle strengthening, flexibility, yoga and crash conditioning. You should also know how to do both forward double cork 10s and you should be able to do just about any grab.
Once the dryland program is completed ensure you have a fairly large jump, between 80 and 90 feet. With a pow landing that is. Bomb into it switch first hit, you shouldn't straight air it a few times because then you'll wreck the pow landing. coming in at around 110 kmph should be good, then make sure you pop and it will all come together.
Or you could just start looking over the other shoulder, ya dumbass.