I don't know if you need this, but here it is:
How to make a rag quilt:
Cut your fabric into squares. I use 6 1/2" blocks. Cut batting into squares one inch smaller than your fabric blocks. So 5 1/2"
Center batting on fabric square. Place second fabric square on top of batting. I mark mine with an X.
Sew along X marked on fabric.
Place two squares together, and sew. I use a 1/2" seam here. Basically you want to sew right along the batting, but not have it be in the seam.
Continue to sew blocks to make rows, then rows together to make quilt.
The back will be flat, the top will have all the seams pointing upwards.
Clip seam every 1/4 to 1/2". Clip close to stitching line, without clipping the stitching.
Wash and dry. Sometimes it take more than one cycle.
And then you have a rag quilt. I usually use homespuns, but some use flannel. I don't think the flannel frays as much.