I'm currently taking a break from making levels since I'm trying to unlock all of the Mystery Mushroom Costumes from the 100 Mario Challenge.
To be honest, I'm not so good at "expert" levels so I may have to resort to buying the corresponding amiibo for the Mystery Mushroom Costumes that are unlocked in expert mode. (such as the Inkling Girl costume)
Here's one of my levels:
054B-0000-01E8-353A
It's basically what happens when Bowser gets drunk/high and goes on a rampage against his incompetent minions (for now it's just the goomba minions. Hit the block at the beginning of the level to turn into Bowser)