I have no idea how to actuallly make a working map

[Gandalf Parker]

Ahhh I look away and Gregstrom beats me in with an excellent answer.

But just to "gandalfize" it...
Yes anyone who is reading this. Any image can become a map. You add the tiny white dots everywhere you want a province, and read it into the map editor in the game. It will do its best to place neighbors and such (altho it usually needs tweaking)

An old image of a pirates map maybe? a map from another game? An image of a boardgame? a satellite image?

Maybe the image of one of those girls on the Dom3 ads? Think of the Victory Points you could place.