In my search for backing fabric I found almost enough of the one on the left. I would be 1/2 yard short so I could piece a section out of the leftover fabrics to fill in. Then I found the fabric on the right of which I have enough for one length for the back. So….my choices would be one full length of each fabric or piecing in a section to add to the fabric on the left. They are both Martha Negley fabrics, also Westminster fabrics like Kaffe Fassett fabric is.