Reading through the rules for the challenge again, I noticed something - work on the map is supposed to be started during this month only. I had built the world map before this month, but all work on this national map was done in this month, specifically for the challenge. While this kind of mapping was the next thing on my to-do list, I had put further work temporarily on hold and hadn't started anything.

Hopefully the fact that I built the world previously won't disqualify me from the competition. From a reading of the rules, I don't think so, but I could easily be wrong.

Not that I have much of a chance of winning though. There be some awesome maps showing up in this challenge. Good luck to all, and congrats in advance to the winner.