This is a spiral using reverse chain stitch - another idea from Mary Corbett. I'm not sure this is any faster than regular chain stitch, but it may be more even, and I enjoyed trying it out.
I also played around with strawberry leaves and a whipped stem stitch.
Niamh took me up on a suggestion she embroider her initial on one centre. This is the centre she chose and she managed a very creditable couched initial.
The one on the right was not embroidered by me. It is one of my late father's initialled hankies.
Since last posting I have added four rows to the quilt - two black and two coloured. I have eight more rows to go and it now looks like this: