The pattern for the edging is Ann Wilson's Hankie Edging (Lily's version). Tatted with size 80 the chains are 158 Niagara Falls and the rings are 658 Ocean Turquoise. Following Jane Eboralls advise I tatted 3 repeats and made the corner. It takes 17 repeats for one edge. When one edge was completed I hand sewed it to the hanky.
Handy Hands Newsletter arrived as I was on the last edge and Kendra Goodnow had a step by step article on joining the edging to a hanky. The first step is to count the number of holes on each side. I did not do this step and thought I had better to count before tatting the last edge. Usually they have the same holes all the way around but there is always that one that got away!!