I would quilt on the inside of each dresden "blade" 1/4 inch from the seams. (Avoid quilting the seams!) And also 1/4" away from the plate around the outside of it, on the white fabric. Also 1/4" from edge inside the yellow circles. Then add a little flower or even cross-hatch inside the quilted circle. You will also need to stitich in the ditch or 1/4" in from the edge of the white square. And something simple in the sashing. Enjoy the journey. Don't worry about how long it takes. It will go easier the longer you do it. Here is a link to one I hand quilted. It is a center motif, so larger than most Dresden plates.
https://www.facebook.com/12930409375...type=1&theater