I've always sewn them together then cut, until this group. Now I sandwich my layers, clip the edges with my wonderful new spring loaded scissors. Approximately a half inch apart, not too technical or exact. After I've clipped the edges, I sew the squares together, making sure ALL the cut edges are on top. (Experience speaking here, lol)Sew the blocks into rows, then rows together. Launder, throw in the dryer...be sure to clean the lint filter several times during the dry cycle.