I was very pleased with the way this turned out. I wanted to keep it as close to hand-drawn as possible, so I chose the fonts accordingly (Aria Penci Roman for the country names, Roughwork Demo for the title in the banner, Writing Stuff for everything else). All of those can be found on dafont.com. The trees were a pain in the @$$; I tried doing them with a pattern stamp, but the result looked too mechanical, so I individually placed every single one. Whew. The colors are pretty low key so they interact well with the overlay layer I did, which is one of Coyotemax's outstanding old paper patterns. The artwork in the corners is from http://etc.usf.edu/clipart/index.htm, which has a bucketload of interesting old artwork. They represent the four elements, which form the basis for most religion on this world.
I may go back and add names for the major rivers and do some other minor tweaking, but the jury's still out on that.