What happens next?

How to jump off a swing safely
Find a swing set on grass, woodchips (be careful as not to get the chips in your skin, which can lead to splinters and slivers), sand or any soft surface.
Pavement is not recommended.
Start swinging.

Choose from: A). Sit on the swing set as high as you will comfortably be and swing it first. The goal is for you to get used to the sport and you should be able to perform it with ease. B). Swing very quickly over the rough surfaces. Slow down when you try to do this. C). Keep your arms on your sides and do the rocking motion, which is very safe. By that, i mean don't drop your weight or put yourself in danger. D). To do this safely, beginners should not go so high. Just give a few strong pumps & get ready for step 3.
D).