Thank you so much for your comments, I am finding them very encouraging. Susan asked "will you do 'seam treatments'?" Funny you should ask that!
The basis of the first seam treatment is a couched 'ribbon'. I used a single strand of DMC floss long satin stitch the full length of the seam to create the ribbon. These stitches are held in place by a two rows of herringbone stitch that replicate the ones used to couch the ribbon in place on the original. The threads used for the herringbone are both a 2-1 made from DMC floss. The longer legs of the blue row are tied with a short straight stitch.
The second seem treatment also begins with a ribbon; this one is stitched in the same way using DMC Satin. This ribbon is secured with detached chain stitches along each edge. A 2-1 twisted thread in the woven through the chain stitches.
The third seems begins with a trailing vine of featherstitch in variegated Anchor stranded cotton. Initially I used a single strand but the stitching did not show up against the background. I removed that and started again using two strands.
I still don’t think the stitching shows up as well as it could but I don’t want to use 3 strands, I think that would be too heavy. The lace on the original is denser than my flax leaf design so this segment appears to be more white than pink and the stitching shows up better. This seam will be embellished which may make it more prominent. In fact all three will be further embellished but I don’t want to add any beads until all the stitching is complete.