Ill. 170. Hemming Square Corners a narrow turning (Ill. 171). Fold the hems down all around, bring the mitered corners together, and hem the side (Ill. 172). Hem the corners, but do not catch the stitches through the material underneath.
Ill. 172. Hemming Mitered Corners this point to the stitching, turn the lower edges toward the right side and stitch the remainder of the seam. Press open, turn the hem to the right side, baste and feather-stitch (Ill. 174), or finish in any desirable way.