To use a circular embroidery guide on a sewing machine, loosen screw at back of the presser foot ankle just enough to insert a circular embroidery guide from left. The radius of the circle is determined by placement of the guide in the holder. Secure the guide with a screw. Place the stabilizer under fabric. Mark the center point on fabric with marking pen. Align the center of the fabric with the rubber point of the circular embroidery guide. Put a flat tack under the fabric and up through the mark to keep point in place. Select the desired decorative stitch and begin sewing.