... I'll not comment on Arralen's comments, though quite frankly I'm surprised.
As for the map. A few things you might want to change from my perspective.
1.) Brightness, the map is very bright, tone it down a little more earthy and then you wouldn't get bLasted with colors.
2.) Terrain grouping. I don't know if you have a specific grouping for your terrain (like those are countries, or something). But more often than not it's easier to group by Terrain types, or at least for a country have one province that is dedicated to the population of the land and the other devoted to the special terrain. (Example, Orcland. You could snag together most of the mountains on one side and the (desert?) and apply the wasteland and mountain tag (low pop) then grab the center and make it plains with a higher population (to simulate orcish? population).
3.) Water provinces need to fit into one of two catagories. Either be viable for water nation(s), or be used as buffers and the map regulated to no water nations. What you've chosen here is the second option I believe.
4.) There isn't really a way to make a map unique as far some of the mapping commands (Sea & Sky makes good use of this as do most of Andrews maps, but he is a talented mapmaker) but you can make provinces that create interesting areas of contention by their borders.
5.) Edi was smart by making the Province box grid. I myself have taken to using it. I think it would fit well on this map as well. To use it, is really simple. Make a C&P of one white pixel then on each true direction put one black square pixel
Code:
BL
BL WH BL
BL