Fold two pieces of fabric (the outer layer and the lining) in half, and stack. To mark the curved cutting lines, tie one end of a string to a fabric marker or chalk. For the neckline, tie a knot 2 1/2 inches away from the marker. Hold the knot at one corner of the fabric at the fold; pull string taut, and draw the small curve as though using a compass. To mark hem, measure the appropriate distance along the string (see above in previous step for reference), tie a knot, and draw curve as before. Pin layers together; cut along both marks.