Jump Pad Made for Floating Islands

I made this to go with Squid_ward's floating island instructable. View it here: https://www.instructables.com/id/Floating-Island/. Now, to the point all you will need is a floating island, a slime block, a sticky piston, and a lever.

Make a floating island. https://www.instructables.com/id/Floating-Island/

Jump about 1 block of your island.

Place a sticky piston directly below where you landed, place a slime block on top, then add a lever next to the slime block.

Test the bounce pad by standing on top of the slime block and flicking the lever. Then, edit the island so you can get on.