Am I right in my guess that you used RobA's mountains tutorial? The prominence of the ridges below your mountains suggest so. If you did, you may have needed to repeat the fill with 50% Grey to remove or at least lessen those ridges. Otherwise, though, a good first town map.
A very respectable first stab at a town map, especially since it looks like you did this using GIMP, and town maps are far more tricking in GIMP than in Photoshop.