My changes are mostly cosmetic; textures to make it seem more period appropriate, outlines to appear hand-drawn, addition compass rose and title (which no map should be without), yadda, yadda. There are a couple of practical additions:
1. Removed "Burn" from edges to show area beneath.
2. Very Basic Grid around edges.
2. Adding space beyond the map so people can add their own more detailed grid. (In Gimp go to Filters --> Render --> Patern --> Grid you can modify sizes there)
3. Added Ocean space for any notes you might want to add into your map.
4. Added a Map Legend of known landmarks.
Everything should line up with the original, including darkness. If anyone has any suggestions I'll see about working them in.
Teh Map:
To Do: