Flossing not only keeps the boning snug in it's channel, it's pretty too. Yea. By the nineteen teens the era of elaborate flossing had waned, but that's no reason you can't go crazy and add ornate embroidery to your sew along corset. Just grab and embroidery needle and thread. The thread can be silk, or a few strands of embroidery floss, or button hole twist like I used on the black sample below.
The aqau is the same thread I used to sew the bias trim and garters and it's a bit spindly, but good enough for a color test. Let's get a better idea of how it would look on the corset.
Aqua, right? The black creates a triangular hole on the corset and is also too geometric against the organic print. The aqua is airier and picks up the color of the bias but doesn't compete with the flower on the print. Who's with me? Aqua!