When you say you understand the puffs, does that mean you know they can be filled with a fiberfill product as this website shows?
http://quilting.about.com/od/quiltpa...uff-Quilts.htm One of the steps says to tie with embroidery floss at the block corners.
This website
http://www.womenfolk.com/baby_quilts/biscuitpattern.htm says to sew a button through all the layers in each flower block.
This website eliminated the center layer of fabric and stuffed each block as she was sewing them together.
http://cookcleancraft.com/2013/03/qu...tmat-tutorial/
Seems that the bottom line is however you want to do it as long as you secure the front biscuit puffs to the back in some manner to stabilize it. Hope we get to see a picture one of these days.