The Purl Bee somewhere. After several failed word searches I finally came across it, but low... their pattern was different as well. The one good and similar thing was that the mystery pattern piece was explained. It was a facing that you make out of thicker craft paper and glue into the lining, at first you think why not use regular iron in facing. These Japanese folks are smart.... I'll get to that later.
The steps were
1. put glue into the frame
2. Slide/Stuff the fabric into the frame
3. Curse a bunch and potentially wipe glue on passer by's such as kitties and fiancee's
4. Add more glue while trying not to pull out the fabric you just shoved in there
5. Curse more and try to keep stuffing it in
6. Stuff the paper cord in while continuing to curse and get glue all over yourself.
Now they tell you you can stuff it all in with an awl or tracer (another pointy metal device). I used a small flat head screwdriver and by gosh I'm happy I did. Using a flat head gave me a much faster result at getting all that junk in the trunk aka fabric to frame. My other trick is while stuffing the first side I pinned back the half that I wasn't using to keep it out of the line of fire.
In these two pictures above and below you can see some closeup of why I was cursing, from stabbing myself with my pins to getting glue generally all over the frame and me.
This is my happy awkwardly shaped product. I thought I would get really making these. Not so much. I will have to make one more just because I bought two frames. But you know what? it does the job and it looks cute. Plenty of lessons learned.