I work with the local county fair quilt judges every year. They look at binding first, then the piecing, then the quilting. The only thing they judge on back is the quilting stitching. None has ever knocked off points for a pieced backing. I've seen some judges at smaller quilt shows get all hung up on being judges and nick pick the quilts to death. I had one quilt get rejected by a judge and it won Viewer's Choice! So enter your quilt, you never know!