wonderful part about that fusible batting.. you can use remove your blocks and it will fuse again and again when you press it so no harm done and you have an idea ofwhat you want. Just know that you lose that 1/4 inch seam on each side so you might need one more or more rows to make it fit the backing you cut (a sash!). Fabric is not inexpensive at all and sewing your own quilt is often more costly than purchasing one but not nearly as satisfying and I wouldnt purchase one ever again even if it meant I could only make a minimal amount. The joy from creating is like a gift you give yourself. Worth every penny.