Also, I'm going to outline three rules:
1: You can add to OR MODIFY areas other people have made, but you cannot straight-up delete anything you haven't made yourself. As for modifying, just try to keep in the spirit of what it looks like the original creator wanted in their area (don't turn a 6-track line into a single-track one, or vice versa, etc.).
2: Scenery is optional. You do not have to add scenery to your area, or if you enjoy adding scenery, you can add it to someone else's area.
3:
Make your curves like this:

NOT like this:

My reasoning for this is that although the second one looks better in map view, I like to go into 1:1 and watch the trains. And the first way looks better in 1:1, so we are doing it that way.

Again, if there isn't really any interest from the community yet, that's fine. I'll just work on it until there is.