Style: NSMB Grassland with Underground sub-world
Concept: Taking my normal design style (lengthy levels, rewarding exploration, puzzle-platforming) and trying to make a gentle but still entertaining hypothetical 1-1 out of them. This also functions sort of like a subtle tutorial for the game, though that matters less for anyone playing Mario Maker or reading this blog, I guess.
Difficulty: 1-1. You can die, but the level doesn't encourage it.