Press the seams open. Then trim the seams until they are ¼-inch wide. Trim off corners. Turn your scarf and press.
Baste a slot for headband, 14 inches long and ¾ inch wide. Sew across one end. Turn and stitch along basting threads. Turn and stitch across other end. See diagram.
Sew (by hand) 2 inches of opening, leaving 1 inch open to insert head band.
Insert head band and your scarf is finished.
Single scarf
Cut one triangle of fabric.