This knot garden is stitched with a foundation of silk braided lacet trim basted to a pattern on a fabric base. Those are the red stitches. I always try to use a contrasting color, so much easier, and safer, to remove at the end.
Here all of the spaces between the lacet have been filled in with buttonhole stitches.
This is how it looks removed from the base and pattern and ready to be stitched into the background of the Enchanted Forest.