Post courses, play courses

So less enemies? I originally had the sub level as an optional thing but decided later on to make it mandatory and never really added to it.

Not my course, but you can learn a lot from Smoke Signals: PFV-HGJ-XTF

The aesthetics and attention to detail are really good in both of those levels.

After careful deliberation, i decided to make a sequel to my most played level.

Speen 2 ween
TBD-31G-HWF

And heres the first
Speen to ween
SLL-8YT-JPG

Goomba Launcher to the sky

WKH-FXJ-K5G

hop on goombas to go up

Fire Flower Mashing

C32-2MY-6QF

get the fire flower and kill enemies to get all door keys

Yeah, less of them, but have their placement be well thought out so the level stays difficult: A bit of trial & error on your own should do

Snowman Valley:
C46-DKR-XNF
This was my first level and I mainly wanted to test out my most wanted features: Snow levels, slopes, and 3D World. It's pretty easy and has 3 secrets (one is just a hidden block, though).

Super Smash Bros. Maker:
HH9-RMX-NWF
Fight Mario series reps on SSB-inspired stages like NSMBU, Peach's Castle 64, Delfino Plaza, and Final Destination! This level counts on you being able to survive for a few seconds before the items you need show up.