It looks to me like you already have the blades stitched to the block background? If you do, have a look at some examples of what the black buttonhole stitch outline looks like to see if it's a look you'd like. Here's one I found on google. https://www.google.ca/search?q=dresd...2F%3B800%3B600

Most appliqued Dresden Plate blocks had a buttonhole stitch around them, generally black, but you could just do a raw edge stitch around the block.

They really need to be against a much darker background. They are lost against the white. Since the fabrics are from an "ancient" time they are so different from modern themes and deserve to be the focal point. I like "fatquarter's" idea for buttonhole stitch, basically the finished raw edge applique technique. But please, change the background fabric. Or let us seem some other ideas you have the the background. Whatever you choose, let us see a finished block or two, or the whole quilt when its done. Good luck.

I think rick rack would take away from the Dresden plates. Use a darker color for center and maybe a non print tan fabric for background. The small satin stitch or button hole stitch would be my choice. You can use stabilizer or spray starch to firm them up. No need to turn under. Show picture when done

I think I would have each of them framed in a dark mahogany or dark pine frame and use them over the couch.
Just a thought....

Might drive YOU crazy trying to manipulate the rick rack. I'd either trim the block (if you can) or just do a blanket stitch around the edges.

i might try some of the stain glass black around the edges

That is what I did and I used a black background. Came out beautiful, made a bed runner using the quilt as you go method.

I agree with Terri D and Boston 1954 on both the issue of how best to applique them down, sew them to a background for application and use a darker background for more contrast. I also like the thought of framing them.

They are beautiful blocks and you are lucky to have received them. I'm sure whatever you decide will be a wonderful tribute to your aunt! Show us the result when finished ok?

I LOVE your Dresdens! I too give a vote for the buttonhole stitch.. it just seems like a perfect finish for your vintage blocks! Have fun!!