If anyone would care to take a shot at creating maps for Tomb Explorer, you can download Tomb Editor and experiment with it. There's some information on how to use Tomb Editor that I wrote up, and also some general game instructions. If you have any questions on how things work, don't hesitate to ask.

I also recommend looking at the article The puzzle structure of Ocarina of Time, since it has some good tips on how to construct levels for games like this. Personally, when I'm making levels I write out diagrams on a big piece of paper for what needs to be accomplished in order to get to other parts of the level, and then I map out the levels on grid paper before I ever build them in Tomb Editor. Also, here are some tips for designing levels.

If you come up with any levels that you like, you can e-mail them to me. If they're any good I'll try to include them in future updates of Tomb Explorer.

Also, if you do create a level and it gets included with Tomb Explorer, you'll get a Level Designer medal:

There may be better medals in the future for people who submit numerous levels.