I love your Sun Bonnet Sues!! But I would get rid of the sashing, and maybe go with a dark blue , calmer sashing. And I don't like the purple.The sashing just seems too busy to me. But that is just my opinion, and I am envious of your Sun Bonnet Sues, they are adorable. I think you need plain between them so they can really shine.
As with everything, you will get lots of opinions, but you should finish it, they are just too cute not to!