You can tack down all at once, if you like, but do
your your COUCHING from the the middle out.
Here, due to the design, I am basically doing that
but also trying put down sections so the cloth pulls
On medallions couch EVERY crack, they need to be solid,
but you may want your piece more flexible, experiment
I will say do EVERY crack on all exposed edges, but
once in side you may only want to couch every OTHER
crack, and areas that are not behaving, I wouldn't however
go less then ever y 5 beads or so. Be sure to do a lacing
stitch (which you can read about in the tutorial) so
your beads have a connecting thread. It's a safety line.