SusieQOH ... What a treasure!!
This looks old ... do you have a story about it to share with us?
How large is this quilt? and each square?
I'm excited for you!!
Once pressed ....
Will the "sashing" lines be fairly straight and square?
Does the overall quilt top lay good and flat?
Assuming positives ... I'll take
BearIsGray's ideas a bit further.
What I am envisioning, is to give it the appearance of mullions in a multi-paned window frame. Quilt close but not too close to those sashing lines. 1/4" to 1/2" depending on the overall size of each window. Then echo quilt around each motif, if it is small, and nothing else if the squares are not too big. Or if a larger window pane, the mullion effect with cross hatching. But just up to the embroidery, with no echo quilting.
You have a lot of work ahead of you!!
