4x4 squares of fabric, seem to be very small squares for a rag quilt.....you need to have about 1 inch seams to put the pieces together and give yourself enough seam width to clip to get the ragging effect. I usually do squares about 8x8 and with the 1 inch seams, I am left with a nice 6 inch piece of ''show off'' fabric that is bordered with the nice ragging effect....but then everyone does things a little differently and that is what makes the world go 'round!!