I swear this "left edge topstitching foot" is just fucking magical. Oh my stars, I've never had less trouble neatly topstitching multiple layers of thick corset fabric! It has one side that is lower than the other and a little sharp ledge where the folded over seam wants to comfortably live, and it just... Works. Magical.
Furthermore, it always feels so Entirely Normal to cut into the nice expensive coutil after literal hours of cutting and marking the pieces. Also pinning into this is like pinning into cardboard with aspirations of being leather, so thick and dense! But the presser foot, it is magical... 😭 The very bottom of the gore slit will need a bit of embroidery, but it turned out so nicely!