three parts to hucking a cliff of any size:
Take-off: Its usually easier if you take it with a bit of speed rather than barely hopping off at a snails pace. Approach in a good athletic position, leaning forward in your boots with your hands in front of you where you can see them. If you're interested in being cautious and in control, lift one foot before the lip and jump off the other foot. If you want to look steeezy as fuck, jump off both feet together.
Flying: Suck up your knees to your chest and keep your hands out way in front of you, arm nearly straight. It may feel awkward doing that, but it will help you maintain control. spot your landing as soon as it comes into view.
Landing: Just before touchdown, put down the landing gear by extending your legs. Ideally your skis will hit the snow perfectly flat, but since it can be easy to fall forward, Its advantageous to land a bit on your tails. Let the tails touch down and then the rest of the ski can follow, sort of like landing an airplane. Absorb the impact through the knees. Keep on skiing after, don't just turn up the fall line and hip check to a stop.