First Map, Ascension Atlas Style

[atpollard]

A nice map and a great first post.

There seems to be a stray mark off the coast of Callatis ... Some sort of a colored line.

With respect to the rivers, have you masked the forest green layer at the river so the blue will show through?
That's the only thing that I can think of that might have gone wrong.
Perhaps someone more familiar with the tutorial will have a better idea.