Thank you for your quick reply.
I'm a novice sewist and have had difficulty in determining fabric characteristics. I was hesitant to make a rag quilt out of cotton because I like the 'raggy-ness' from flannel, but I found the perfect material in cotton, so I hope it frays and is soft enough to give me the effect I'm hoping for. I'm also thinking a better quality of flannel would be the way to go.