Sewing a curved seam requires you to know the exact point of the seam guide that is even with the sewing needle. Setting Your Seam Guide explains how to find this mark.
A curved seam requires you to have control of the fabric as it feeds under the presser foot. As you sew the curve keep the edge of the seam allowance lined up with the mark that is even with the machine needle. Sew slowly and allow yourself the time to control the fabric.


