It was fun to watch the fabric change while I was stitching. The marks inside the brown buttonhole stitches are from a screw.
This is one of the 12 samplers I prepared for TAST 2012, they are 15 x 15 cm or 6 x 6 inch. I'm just stitching on the sampler that matches the stitch for me. For the buttonhole stitch I worked on 2 different samplers. I wrote about my buttonhole border here.