How to land a jump on a snowboard
You want to distribute your weight equally on both feet.
The angle of your snowboard should be parallel to the angle of the slope as well when you are landing.
Bend your knees while you are in the air so that you can use your knees to absorb the shock.
You should absorb the shock of the landing with your lower body and your upper body should stay upright and over the snowboard.
Dont panic/worry too much about the airtime and just enjoy the feeling of weightlessness.