I could not figure out the math to go with the borders. I just thought some of those smaller 9-patches set on point would look interesting.
I added the light blue print to separate the border a bit and will put another strip around the outside.
I like it because it can be pieced without much notice as to where the seams lie and it is neither too dark or too light.
Now that I know how many blocks to join for the top and bottom borders, I am working on the second one. They don't any touch in the same place which bothers me a little but to do that I would have had to cut different size squares and my goal was to use some of what I had already marked and cut filling my tin.
I am hoping that the side borders will work out to the right size too.
When I began this, the Celebrate Hand Quilting site was having a 9-patch challenge. I think they may have all moved on long ago as I have not seen any nine-patch posts of late.
Anyway, I am glad to have this quilt getting a bit bigger. I have not spent much time going through stash but I am thinking I might like to see an outer border ... maybe in a bit darker blue floral or all-over print and a light blue binding. I am happy to see this getting closer to single bed size. The different shades of white don't seem to make as much of a problem as I had imagined either.
Best wishes from a sunny but very blustery Tokyo!