I have done a couple huge quilts that way..the way I do it may not be right..but it works for me..if u do a rag quilt it is very easy..all seams are open and on top of the quilt..the only thing that takes any time is butting the batting..the quilting done on the four pieces should have lines in it .so the connecting seams don't show..I quilt to a few inch from the edges.connect them then quilt over to the edge..if raggy..if not ..then I quilt over the connect seam...if the quilt is not raggy..I quilt a few inches from the edge..connect two pieces..the normal way u connect pieces for the top..then I butt t he batting together..backing is then hand sew to the next piece..or u can use the quilt as u go method..to connect the four pieces..putting the sash on the back side..if u do that u can use four different materials to make a whole new quilt on the back..as I said this may not be right or appeal to others..I have done all of these..and it is hard to fine the four squares unless u really work at it..hope this helps a little.