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This is a map I made for one of the DnD worlds I'm working on. I used a sepia ink wash for the paper then added some pale watercolor washes for the water. The drawing is done with dipping pen and burnt umber ink, with the countries in burgundy felt pen.
I use watercolor paper for my maps in general because it does the best with the washes I put on it. I made a couple small edits in photoshop to fix a couple tiny mistakes, but aside from that it's entirely hand done.