Nice stuff - I thought your DH did a good job picking out fabrics.
a FYI - cotton flannel generally SHRINKS - a LOT! At least the stuff from a few years back did.
So, if you want the finished quilt to be flat, wash the flannel in HOT water before putting it in the quilt.
You might have to press it before using it.
It's been a while since I've used flannel for anything, so maybe the new ones behave better.