I've tried a couple of methods and this is the one I think I'll stick with. I finally decided against the yoyos, though I spent some time making them. The change seems good to my eye. What I am doing now is cutting 3 layers of batiks in the color family I desire. Sometimes all three layers are of 1 fabric and sometimes I mix it up. Then I cut into the edges, pie style, leaving an uncut center section where I attach a bead and sew it to the quilt top. After I have several sewn on I put a bit of sizing on my fingers and ruffle up the edges by pinching them. When it dries it stays fluffed up pretty well.
I stitch them over the centers of the flowers and vary the sizes and the beads just to mix it up a bit. This is a slow process. I'm still making flowers and now centers. I'm approaching the halfway mark, but that's probably wishful thinking. Got to keep going.....