In honor of Samus Aron for showing me how to jump on thwomps:
Popgo Thwomp 104C-0000-005F-C56F
A difficult course, all about bouncing on thwomps then riding the boss thwomp to the finish. I built in 3 check points so you don't have to start right from the beginning each time you fall. Just make sure you reach the door alive :) Bonus points if you can carry the fire flower all the way to the end.
This took a lot of play testing to get working. Now back to playing more levels from this thread.