Tip: Make sure that ALL exit-enabled pipes, doors, etc. have a screen exit defined, or they'll take you to Level 0, the "endless" bonus game. Unless Start+Select is enabled, the only way out of it is to reset the game.
I don't do much on this site. I make posts on some forum threads, make threads of my own, and have written some hack reviews, but that's all. I'm making a hack which is my first, which I probably won't finish until 2016-2017 because of my laziness and I'm also hopefully going to get a let's play channel on YouTube this May.