Sewing Darts

Sew a double pointed dart as if it were two single pointed darts. Start sewing at the middle (center) of the dart, without backstitching, sewing to the end of the dart and shortening the stitch length as if it were a single pointed dart.
Return to the center of the dart and stitch over a couple of the stitches that started stitching to the second point of the dart. Sew to the point of the dart and repeat shortening the stitch length. Finish the points of the dart by knotting the tail threads as you would for a single pointed dart.