Instead of making levels with friends, I recently decided to try playing alone and designing my own level. This is Sinister Den! It’s really not so sinister, but I have realized I like lots of jumping and bouncing at the beginning of levels apparently. And don’t worry, this bouncy part is only one section.
Be careful not to kill friends. Also, remember that coins can help guide you. There are no traps in the level. Trust the coins.