ok, first of all, stop arguing like little school children about wether stuff is easier on skis and tramp.
its different. tramp really wont help everything on skis. things get thrown differently on each. but tramp will help you loads with air awareness.
on a trampoline, drop you leading shoulder some and lead with both you head and hips. think about almost lifting the trailing side of your hips up. this will insure you will go cork and not bio or misty. try doing half of it to get feeling, then throw it all the way to land.
on skis, the first thing to do is to get comfortabel carving off jumps. try doing this a few times to make sure you have the speed right, then whe you go to try it approach the lip and carve, then, when you get to the lip, drop your shoulder, and try and do sort of what i explained on the tramp, you dont need to accentuate it as much on skis though since you are taking off at an angle.
also, make sure you pop, if you dont itll either look like crap or you will eat shit., and dont freak out in the middle of your rotation or you definatly wont land right.