NSMB Wii Custom level by a 7 years old kid

This level was almost entirely made by my little cousin, he was only 7 when he made this! Want to see how this level would look like in Mario Maker? Here it is:    • [Mario Maker Edition] NSMB Wii Custom leve...   I only added the music and the entrance point/flagpole. This level was made using Reggie level editor, but now we have Super Mario Maker! Use it, it's a lot of fun!