Here's the repair step-by-step.
I traced the whole area including the embroidery and quilting that will need to be restitched. And cut patches of the new off-white fabric.
I pinned the patch in place, and decided that it looked a tad too bright.
Matching fabrics and threads for repair work rarely means finding an exact match, of course, given the passage of time. I find that choosing the one that is a bit too dark is almost always preferable to choosing the one that is a bit too light.
Here's the completed patching.
I've talked about the issue of matching old colors in several previous posts:
faded red and old white
using rust and tan to repair what used to be a red and white schoolhouse quilt
matching red on a Victorian silk crazy quilt
matching old whites on a blazing star quilt
To mark the placement of the embroidery and quilting, I laid the tracing paper over the patch, inserted pins at the embroidery and quilting marks.
Then I lifted the paper back, and drew guidelines for the stitching with a big pin. This scores the fabric enough to see in good light (actually light that comes in at a bit of a slant, so there is a shadow created). It can be tricky to get it just right to see, but the plus is that there is no marking to remove. This seems ever so much safer to me.
I found the perfectly matching perle cottons at North Shore Needleworks - tons of glorious colors and tons of types of thread and super helpful staff. No affiliation / highly recommended.
And here is the completed repair.
The whole-quilt photo at the top of this post was taken after the repair was complete. The repaired block is center of the bottom row.
This is one of my most successful repairs, if I do say so myself. I'm really happy that I stopped and recut the patches. I always figure that the time is well-spent - an extra half hour now will stave off years of the I-wish-I-had's. I have to talk myself into it that way every time!