Thanks for the tutorial! Also the levels that are contained in SARC archives contain all the Tilesets and Objects/Sprites used in the level. This means that you are limited to whatever this level supports. Example: Placing a Rolling Hill in 1-1 will crash the game once you get near it, this...
MrBean35000vr is known for abandoning amazing projects: SMG2 Split-Screen Multiplayer and Mario Kart 8 Custom Tracks. And it's all just for MKWii which I'm not going against it. I love MKWii but these other projects could have been amazing!