Pin the lining pieces right sides together with the front and back units. At the zip slit, turn the lining back, approx. 5 mm (3/16 in) before the marked seam line, and pin to neck edge. On dress, turn allowances of slit edges to outside and pin in place, over lining. Stitch along neck and armhole edges, beginning and ending 2 cm (3/4 in) below each shoulder seam line. Trim the seam allowances and clip the curves close to the stitching. On dress front (not on back), turn lining to inside. Slide the front shoulder edges between the as-yet-unturned back shoulder edges – right fabric sides of front and back/ of lining lie together. Stitch the shoulder seams of the dress and lining. Clip shoulder seam allowances into the corner. Pull the front and the lining which lie inside up and out slightly, to press the seam allowances open. This will be easier if you slip the handle of a wooden spoon under the seams. Then stitch remaining open neck edges closed. Pull the front down out of back shoulder edges and the back lining will turn itself to the inside. Press neck edge.