Just posting the beginnings and comments.
Don't like: It's Patchy...GAH! And slow... because I am trying very hard to just use the colors in the areas that I see... which makes it laborious. But you don't gain new muscles by doing the same exercises over and over. So, I'll do the challenge, then play with it.
The color matcher is interesting to use.
The thin paint is okay. I'm neutral on it so far. But I do like how easily it cleans up.
When I'm a lot farther along, I'll post a few more image. Hope the rest of you are having fun with it.