What a gorgeous quilt, I'm sure Margaret will love it. If she doesn't, my name happens to be Margaret also, and I would love it. lol. Just kidding you did a great job.
it's gorgeous - I love it. I also did a garden trellis mini quilt with a bit wider "sash" and it was quite difficult...but fun! great job! now I have more ideas for how to embellish it... :-)