Yep, Matt’s worry hat is done (as seen here on accomodating but not so talented at acting husband, Cory). I made the teeth out of polar fleece, and sewed it down only vertically, between each tooth, to maintain the stretchiness needed. I think it looks a lot better than knit teeth. Otherwise, I followed the pattern exactly. A quick, fun knit. I only hope now that it fits Matt!
(As an aside, my glasses came in. They are, as expected, purple.)