Here's where I'm at today. I decided I like the turquoise and I'm glad I decided to add it. The turtle is basically done. I've got more work to do on the branch he's resting on and I have a fly in the sky to add that my turtle has his eye on. Working on matboard is very different than working on w/c paper. It's difficult to add glazes as the paint tends to lift more easily on this surface, even after the first layers have completely dried, but I believe the textural effects are worth the trouble.