Wow, I wouldn't strip down and start over, it looks amazing! I love that you used a Totsy fakie, LOL!
I just have a few suggestions, if you were asking for them...
I too think the blue is a bit confusing. If I were you, and of course you may disagree, as I'm totally not atistic at all, but I'd paint emerald over the blue, and just do a thicker black outline around the emerald city to make it stand out.
Looks wonderful either way though!