Thumbs up, nice first map.
-You can get some great mapping tips from the tuts on the site.
-The black lines on the mountains ruins it a bit for me.
-You've made a good start using brushes for terrain texture, i think it will look great with a little practice an experimentation.
-You will get a visit from the river police, so I won't touch that.
-Are the missing fills of the lakes intentional?
-The roads should go over the rivers imo, or put a bridge/ford symbol over it
-I really like the skin/hide background, good job!
Keep it up!