I believe the comment on antialiasing is directed to the rivers and coastlines (and contour lines) They display the "jaggies". How did you draw them?

If freehand, use the paintbrush tool rather than the pencil tool. This will give smoother lines. Alternately, create them as paths (either in GIMP directly or in Inkscape then imported into GIMP) then stroke the paths.

For the contour lines, again, I don't know how you created them... stroked selections should not look as jagged as your do.

Overall, however, nice work, with a decent colour palette choice. I, too like the B/W map, but there are two issues I see - no roads/trails are clearly shown, and the river seem to get lost in the Fell Grave.

-Rob A>