Attaching Back Panels To The Side Panels

On the back panels, mark with a pin 1.5cm in from the raw edge at the top of the side. This indicates where your stitching line will be.

With right sides together pin the back panel to the side panel making sure the pinned marker is level with the side panel at that point – the back panel will sit slightly higher at the raw edge but match at the stitching line. 

Stitch with a 1.5cm seam allowance and make a flat felled seam as before- making sure you press to the side panel and  trim down the side panel seam allowance.