The quickest way I have found to do circles is, take a thumb tack and some blue painters tape. Decide how big you want your circle, lets say 3", then you put the thumb tack, pointed side up, 1 1/2 inches from needle(1/2 of circle size). Put the center of the fabric on the thumb tack, take a cork (from the wine bottle) and put on top of the tack, sew slowly with short stitches. Do a little guiding and you get a circle.