When I made the backing for the king-size plus quilt, I used 33" squares of the fabrics left over from the front and/or that didn't make the grade to be on the front. The size of the squares was based on the fact that the front squares are 12" each so it wouldn't bother me if the seams didn't match up. (Does that make sense???) It's at the quilters now and will take a pic when I get it back. :roll: :roll: