This will probably sound bad, but in staying so close to the original what was the point in making the map. I read the books, and I think there were moments when I thought the map was wrong. Based on the descriptions and story I think there were things that seemed off. Granted you don't want to mess up the places too much, but the coastline and treelines are really arbitrary. The original artist made something up, and frankly his handling of mountains is a bit all over the place. I think if you are going to do such a good job copying it, why not make it your own, your style is cleaner and I think you could add to the overall work by adding your voice to it. Sorry if that sounds mean, I just think you've done no justice to yourself in copying an existing works so closely.