Illuminated One, my own test mod is pretty much identical. The only differences are that I don't usually have Teleport, and I have only one line in the beginning:
This as the first line is enough to get a .dm file recognized as a mod.
Tifone, if you haven't done a .dm file before, you can do it by renaming (if you see the original .txt at the end of the file), or by saving the file as "filename.dm" with the quotemarks.
I also just went through my old projects and was reminded that I did a really simple sprite-editing guide a long time ago.
Linky. To get sprites, look for the files EricM extracted. The newest sprites (from the last patch or two) were extracted by someone else, but unfortunately I don't remember who it was.