levels

Basically I want to re-create some tracks from Mario kart 64 into srb2 because I think it would be fun to run around in a racing stage as Sonic, but I don't know what I need to make levels so got any idea of what I need to get?

An simple stage that you can get 250+ rings... That is my first stage, but this originated of an game called "Sonic Diamond" that i made, as a kid in an game maker called "Julian's Editor". I'm so proud of that little level, it was inspired by the SRB2 Generations, like an experiment of making...