Borders were my dread. Piecing the long strips, sewing them on, keeping them flat, and an all around hassle for me. I decided why do it the way that was hard for me. Now I sew the border on each edge block like sashing. It is so much easier and I get perfect borders every time. it's easy to sew a pieced border this way as an extra block on each end of the row and cross the top and bottom.