I finished it! Only had a few repeats left so last night I completed the tatting and then attached it to the hanky this morning. I didn't use the crochet method for this one as the handkerchief was just too fine and I felt the crochet edging would have been too bulky and too firm a treatment in this case. I used a fine needle and thread and an overcast stitch instead. It really is a lovely handkerchief and the fabric is so fine it is nearly transparent. I don't like working with white much but it seemed the best option for this pretty hanky.
The edging (my own pattern) is made in DMC Cordonnet Spécial in size 60.