ACTIVITY 3: DIRECTION. Match the sentence that tells the procedure in sewing the envelope pillowcase from Column A from the picture in Column B. Column A Column B A. - 1. Lay-out and trace the pattern in the cloth and provide seam allowance. 2. Fold the edge of the front and the back pieces 12 another 1" inward, pin-baste to press and sew it using running stitch. B. 3. Next, fold the hem of the longer piece 5" and pin it. Be sure that the wrong side face each other. Do not sew for this will be your flap. C. 4. Sew 7" along the edges from the right to the left of each side using plain seam. D. 5. Cut %" from the 2 sewn edges making sure that the straight stitches are safe. E.