You can see earlier glimpses of the book under my Seawigs tag here. Drawing underwater stuff if fun, I can create a real magical kingdom. I'll be working on this picture today.
Also, I was talking to my co-author on it, Philip Reeve, and he referred me to the sets in The Magic Roundabout and sent me this link. If you're not from Britain, you might not remember this programme from childhood, so I'll post it for you. It's very slow-paced, but the shapes and colours are so lovely: