sydneymath

My Christmas quilt measures 85" x 65". It is made of sixteen 15.5" square blocks (4 blocks x 4 blocks) and a top and bottom header that go with the fabric. I have wanted to do a piano keys border for a while, and want to do one for this quilt. As my bed measures 78" x 72", I don't know what width and height would look good. I'm assuming I will have to add another border, too. If I add 20" to the length, that would be 105"; adding 20" to each side would be a width of 105", but I can't have 20" long piano keys, can I?? So, how long and wide SHOULD the keys be, and what other kind of border can I use below or above the piano keys border? OR, is this not a good quilt to use them on???

Any suggestions welcome!

Thanks,
Ann