Open Super Mario Maker 2
Select Course Maker
Choose a game style
Select a theme
Pick a course theme setting
Place ground and terrain pieces
Add enemies, blocks, and items
Insert pipes, doors, and other objects
Set up power-ups and collectibles
Add hazards and obstacles
Create paths, challenges, and secrets
Test the level in Course Maker
Adjust difficulty and layout
Save the course
Upload the course to Course World if desired