That's a great start. I'm always fond of black and white maps, they're really hard to do because you have do relay heavily on textures; I agree here with Arimel and Bee about the mountains and the kind of paper - specially if you want to color it later!

A personal thing to me that I always like to do is: borders. And I don't mean fancy, ornamental ones. Just a little frame to give room between the map and the paper border, so it can breathe a little. I know that can't be done right now in this one, but I think you could consider for the next ones! ^^