I've started the back but didn't want it to get too complicated so I bought more turquoise batik and I'm going to border the rest of the back with that, but so far:
I'll take another pic after I put the rest of the border on.
Here's the finished back. I didn't size it up yet with the top, but I hope I did the math right and have more of the back turquoise batik to overlay onto the front. That's what I want to do for the binding. It should have an inch or two turquoise ending up on the front edge. If that makes sense.....