Elmers gal here!! No need for wasted extra fabric for backing as there is very little shifting. Once glued, no movement. Use a light hand, if you have any blobs, smooth them out as you go. I usually iron dry and then hang over my balcony to really dry, 24 hrs. Make sure you use Elmers Washable School Glue. Great buys when school starts but you can buy it by the gallon from several sources. I like Amazon. A gallon lasts a LONG time!!