looking good so far. I only have 2 comments that hopefully may be helpful. On the top right of the map is a river system, that looks like an elongated 8. its kind of bizarre looking to me. 2nd point is about the mountains. I like to look at old maps, and yours is spot on except for the mountains. Usually during the era your map is sort of pointing to used simple mountain symbols. Look at some of the early mercatur maps. they may give you some ideas.

gl,
Marc