A small flange of red between the blocks and the border, Just in case/ FYI - a flange is a 1inch maybe 1 1/2 inches strip of fabric folded in half - wrong sides together and placed between the border and another section of the quilt.
I hope this is a welcome comment. I am hoping that I did not step over my bounds.
Edited to add: Do some people do the applique on the border strips before attaching them to the quilt body? It seems to me that would be easier.