you generally won't have much control but if you can, try to hit the ground first with your skis and then sort of hipcheck/roll the rest of your body to the ground.. that is, try to make the order of body parts hitting the ground go feet legs hips core maybe shoulders (and pretty much above all, try to not let your head hit, it doesnt take hits and recover the same way the rest of your body does)the way paratroopers used to do back in the day when they hit the ground hard
i can't remember very well but i vaguely remember some dude hitting the huge JOI jump naked a few years ago and over shooting the hell out of it, and i seem to remember him displaying a pretty good overshoot landing technique considering the circumstances. maybe i or someone else can find that video and see if that's true