This first one is Cretan Stitch worked over baby rickrack with a row of buttonhole stitch on each side, and added beads.
The second seam is two staggered rows of "Head of the Bull" stitch over purchased flower trim and with beads added.
This next one is rather embarrassingly ugly! I tried various different treatments but the purchased trim underneath resisted all attempts to beautify it. In the end I figured it's just one very short seam in a large wall quilt. Hopefully it's ugliness will not become a focal point. My colour choices certainly leave something to be desired.