I cut more white and black strips and a few more gray strips last evening to fill in the empty spots. I cut the strips 3 1/2". The solid squares were cut at 6 1/2". I got two blocks sewn together into one of the three rows that will make up this quilt.
This top will end up being approx. 35 1/2' x 45". I like this layout and may make a few more like it.