as for landing them just be comfortable skiing switch and dont put your legs down for the landing when your still in the air. i used to do that and itd put me forward and id land and double eject.
Ive never done em over a big jump like a 35-50, and havent done em in a while but what I used to do is just turn my head back uphill for a split second and then respot my landing
Look over your shoulder right up to the point where you are about to leave the ground, then look straight down between your skis all the way to your landing. I find it easier if I don't look over my shoulder at all in the air.