I did this in two sittings over two days: first for the line, next for the color. Thanks to Mattias Adolfsson, I’ve rediscovered my old Pelikan fountain pen. I asked what kind of ink he used, seeing that it appears to be waterproof and yet is coming out of a fountain pen — two things that usually don’t go together. He told me he uses American Eel ink, so I ordered some. Fantastic stuff. That pen has neither written nor drawn better than it does now.