b. Off centre lengthwise fold: This is used when narrow pieces have to be cut on fold. To ensure that the fold is parallel to the selvedge, mark points measuring the required distance (width of the half pattern including seam allowance) from the selvedges at regular intervals and fold along the markings. The layout for a childs panty on this type of layout is illustrated in the figure.

4. Overcast seam finish: This is a common finish used for both thick and thin fabrics that frays easily. It is suitable for narrow seams and also for seams that receives hard wear such as armholes and waist lines. Make a plain seam and press open. Work overcasting stitches over the raw edges separately. Avoid tight stitches in order to prevent edges from puckering on seams of armholes and yokes. Press the seam allowances to one side and overcast both edges together.