madamekelly

You could also use spray sizing. That is what manufacturers use when they make fabric so it looks nice in the store. Also- All cotton, including flannel, has a stretch across but not down. When I work with flannel, I make a small clip on the not stretch edges, so that when I put them together, I can put stretch to stretch, and no stretch to no stretch. This may help you too, just remember to make little clips, so that they end up in the seam allowance.