Shalder cardigan up north last autumn, but after a few Flashdance moments, I realized that the neckline was too sloppy and slouchy.
I tried the Yarn Harlot's ingenious method for a crochet edging to stabilize the collar. On my first go I worked the crochet chain through every purl bump. It was firmer, but still too floppy to stay put. Take 2 -- I worked through every other purl bump: