I've chosen a height of over 60m with no possibility for someone else to die as i fall, though I don't know exactly how I'm supposed to face what I'm falling into. in the movies people seem to jump off standing straight from the rails, but I'm not sure how id fall with that kind of pose. Do I have to fall off fast first to reach the ground in that position or is there a way to turn or use my body? The Fall to ground time is under 4 seconds, so I'm not sure if there's much I could do in that time anyway.
You say "face down" not "head down". If that is what you really mean, then watch some skydiving videos, to see how solo skydivers stay in a stable position on their front. Study how they position legs and arms. Also, lift your head up and look at the distant horizon; do NOT look down, or you will go unstable, and perhaps do a backflip. It's harder than it looks, and in 60m you may not have time to become fully stabl
e. A lot depends on how you jump. If you jump feet first you certainly won't have time to achieve a stable, face down position. If you really want to master it, you would need to spend some time practicing in a wind tunnel.
If you mean "head down", then just diving, as if you were diving into a swimmng pool, would probably do it.