In this picture you can see that I've turned the facing and pressed the seams.
|I am ready to top stitch facing and draw lines for casing|
|Stitch the top casing seam. Then pull the sashes through the back of the dress so they are now on the outside|
In this next picture I turned in the raw edge of my facings and pinned so they are ready to slip stitch.
Be careful that you don't catch the sash in your stitches.
Now you are finished with the hardest part of the dress and you can tie your sashes.