Ooh, purty! They're fun to play with and even better, they do what I want them to do without my having to fiddle! Everyone I had talked to about Copics said "You can't use them on cold pressed watercolor paper, they'll feather badly and just soak up ink like mad!" Ya, not true. Which is so very goooood for me. Seriously, I'm doing a little jig. I was convinced I'd have to hunt for a fixative to spray on the paper after I laid down the paint. I wasn't sure even that would work. I figured there was a 50/50 chance that I would have to switch papers if I wanted to combine Copic markers with my Holbein watercolors.
I feel like I've won the artist's lottery. On the right (this was my Arches paper test), you can see the clarity of these amazing markers. They lay down transparent color just like the Holbein watercolors I use. Copics also layer just like watercolors do, one color will affect the next color in similar ways that a color wheel shows... (ie. blue + yellow = green)
Playing again, I cut up an old sheet of paper I experimented on, then added zentangles on the back. I think it turned out pretty fantastically. Both the cool and warm grays are amazing! They make shading so easy, just a couple of swipes and, tada!!, depth. I can see now that I'll want to fill in the missing colors in my Copics. I think that I'll want color mostly for the zentangling, though. (If you click on any of the pictures they'll show larger, so you can see the detail.)