Some of you textures have high detail while other are stretched and that dosen't blend well. In general, you need some transition between the different zone too.
As for the font, the color bothers me. Red is not a good choice and the other colors, well it depend. You need to improve the consistency there too.

If you want to keep that style and improve it you can look here for ideas http://www.cartographersguild.com/co...oned-maps.html
here in particular http://www.viewing.ltd.uk/Temp/CG/Th...appedTiles.png
and here http://www.cartographersguild.com/at...tory-map1a.jpg

or search on the forum and you will probably find someone that has a similar style