I finally got around to building and attaching the collar today. I'm not entirely happy with the way it lies when it's closed, but I didn't check the fit with the rest of the garments in place, so it may lie a little differently in the end. Honestly, I don't expect the the collar will ever be buttoned all the way up. It's certainly stiff enough to stand up on its own, which is a good thing. I'll take some pictures the next time I get a chance to put the whole outfit together. There's another sewing circle this weekend, during which I plan to put together a simple pair of sleeves. After that, all that will be left to make is a hat.