Add Support Ribbon or Tape
Next I added support ribbon along the curves of the hip and the ribs. To do this I stretched each side across my thigh (yes, this corset fits on my thigh) so I could pin the ribbon in such a way that it smoothly followed the contours of the corset.
Then I carefully made sure the ribbon was in the exact same location on both halves of the corset.
After sewing down that ribbon on both halves, I repeated the process for the ribbon along the top of the hip. Your support ribbons do not have to be located in the same places as mine, so long as the waist of the corset is fully supported, especially if it will be used for tight lacing.
Next I took the busk and finished sewing together the front panel where the hook side of the busk belongs. That finalized the locations of the hooks, so I could stitch down the ends of the ribbons in such a way that they would not block or interfere with the hooks.
I likewise stitched down the ends at the grommet side of the corset, and trimmed the excess.
For full details on how to prepare the busk panel, see my tutorial How to Insert a Busk.
Next I stitched the top and bottom support ribbons in place. They both extended a bit past what would ultimately be the top and bottom edges of the corset, and were stitched down to the coutil in exactly the same manner as the earlier two support ribbons. After stitching down ribbon on one half of the corset, I used a ruler to mark the exact location on the other half before attaching its ribbons. Sport mesh is so malleable that having the support ribbon in place before edging the corset makes like infinitely easier.