Corset Top Faux Lacing Directions by LisaZoe

Cut the front piece 1/2 the length of measurement A plus 3" for ease
and seam allowance. The width is equal to measurement C plus
1.25" for seam allowance. Cut this into two equal pieces down the
center widthwise.

Cut the insert panel 4" wide and the length of measurement C plus
1.25" for seam allowance.

With panel section right side up, place pieces of ribbon in a crossing
pattern as shown in illustration. Pin in place once you're satisfied with
the layout and baste stitch.

Attach one half of front piece to each side of the panel and press
seams away from panel. Topstitch if wanted.

Trim sides of completed front section so it is 1/2 the length of
measurement A plus 3" for ease and seam allowance. Make sure the
inserted panel is centered before cutting. Following illustration, cut
armscye (I fold my fabric in half widthwise so I can cut both at once).
Cut a second piece identical in size and shape for the lining.

Once the top is completely assembled, I sometimes add a bow sewn
to the center of the bottom ribbon in the inserted panel. This is
optional but adds to the illusion of lacing.