To start off small, I give you a level I originally created in Super Mario Maker. It's the first level I've ever made using it, and now, I've ported it over onto NSMBU with a few changes. It is small, I know, but at the time, on Mario Maker, I didn't have all the elements.
Click here to download it. Use Cafiine. If you have no idea on how to do this, click here for a Cafiine tutorial. (Link coming soon)
[WIP] 1-2: Going Under
Another small level, also originally made in Super Mario Maker. I need some help on this one...
I use Reggie! Next to edit levels... however, I can't seem to get the first pipe working... Any help?