Here's the Snow Ball With Piano Keys border. I probably don't have all the fabrics, but you get the idea. What do you think of using the same dark color for all the corners. I think that that would give it some overall structure. Then I've shown it here with a small one inch border between the snowballs and the border. I can also try it without the narrow separator border. The piano keys are 2.5" wide finished; which would mean cutting 3" wide strips. The piano keys border is 5" wide, making the finished size of the quilt to be about 48" X 67".