Staystitch just inside the seamlines of the curves of the centre panel. Clip into the seam allowances at regular intervals.
With the clipped edge on top, pin the side panel to the clipped edge, right sides together, matching markings.
Stitch on the seamline with the clipped seam on top. Backstitch at the beginning and end. Repeat for the opposite side of the centre panel.
Cut out small V’s (notches) in the curved seam allowances of the side panels.
Place the seam over a tailor’s ham and press it flat on both sides.
Press the seam open, using the tip of the iron. Repeat for the opposite side panel.
