I tried pin basting and big stitches and finally tried spray basting. By far my favorite method. If you don't have a big area on the floor or a table (which I don't), you can do a little at a time, or use a design wall to hold it up for the process. I use a flannel backed picnic tablecloth for my design wall, flannel side out, pinned to the wall. The falannel acts as a clingy area to hold up the fabrics/backing. I pin the backing on it, wrong side out, spray it, and add the batting. Smooth it out, pin (thumbtack) the batting too, to give it a little extra hold, then spray and add the top. smooth it out, let it dry and there ya go! Be sure to have ventilation and put newspapers or a drop cloth down to catch any over spray.