I only did one quilt with straight lines that started on one side and quilted to the middle, I then thought there was very little movement so I would turn the quilt and start at the side again and quilted in, big mistake. I ended up taking the second side of quilting out because I had a puffy strip of backing in the center from the backing moving, it wasn't terrible but it was a small quilt so I fixed it by quilting the second half from the center out.