This was done on cold press watercolor paper, starting with a coffee stain base (pretty weak coffee, by the looks of it). I then made the mistake of doing the line work first (rapidograph pen with brown rapidograph ink), with watercolor on top.
As you can see, the watercolor paint made a mockery of my lines. So if I try this again I'll need to lay down the color first, then the lines, but that's a pain in the ars. One other thing, the rapidograph nib did NOT like drawing on watercolor paper, ostensibly because of the rough terrain it had to maneuver over. I tried finding as smooth a press as possible, but no luck. If anyone out there has any suggestions for watercolor paper that marries well with technical pens, I'd love to hear it.