I did 2 rag quilts myself.I purchase 1 yard of each fabric.
I made my rag quilts w/ 5 layers of flannel
Front & back pieces show so you wil need to plan your desired "look" in advance.
The back of my rag quilt is usually just the same print.
But could be whatever you want.
I also sew a big X in the center of each block before washing