I was hoping you'd get an answer, because I have a similar question.
The only tip I have is to carefully machine stitch around the edge and tuck under the seam allowance, then hand appliqué. I used this technique to do fancy yokes on Western shirts for years.
I thought I'd do that around the outside edges, too.
Also, I put a thin circle of batting to hide the seams and seam allowance.
Did you get any tips from any other source?
My question was this: a friend gave me some partially completed blocks that have all but the last seam sewn (hand pieced) and I was wondering why.
I have done machine appliqué Dresden Plate blocks before, but they are the pointed end kind, not the rounded kind.