Here is what I started:
Ok, started counting again and this is motif 7 of second 25-motif challenge
I'm making holes with a large needle right on the edge of the hanky as I go along and attaching the little rings into the holes. I don't often attach as I tat, but in this case, I thought it would work well. I improvised the corner when I got to it and am only eyeballing the distance between the holes. So, as you can see, this is a really "chilled out" project. Easy.