I am going to go out on a limb here and say that I am just not totally in love with the applique. The sentiment is so sweet, but I do not think it adds to your gorgeous quilt.
If your are going to do an applique, have you thought about appliqueing something Americana? A flag?
I am anxious to see a photo of your quilt. I think we could come up with more ideas if we saw the actual quilt.
I do know that whatever you do, your quilt will be appreciated.