Trace cookie cutter for shape, work in negative space around shape after stitching tiny guideline of shape. Use a thread conditioner, Thread Heaven, on embroidery floss to prevent fraying; French knots or stab stitches used for effect.
English knot instead of French knot. makes a true knot instead of a donut shaped knot. Comment: I believe this is what I know as a candlewick knot. Directions available in candlewicking patterns popular some years ago.