Lynn - I'd like to offer a few tips that work for me. I push two long tables together in the cafeteria of the school where my husband teaches, and cover them with old curtains to catch any over-spray. I don't spray anything before I start. I usually lay the backing on the table, right side DOWN. Then put the batting on, and smooth from the center out in all directions, without stretching the batting if possible. At that point, I sometimes trim off the excess batting, particularly if I'm working with a pieced back, so I can see where the edges are for the next step. Then I lay the top, wrong side DOWN over the batting, and again, smooth from the center out, making sure that the top is centered on your backing/batting. (I use either of two smoothing motions: moving both hands outward from a starting point, or "anchoring" with one hand and smoothing with the other.) Once you are staisfied that your sandwich is the way you want it, grab your can of spray and SHAKE THE SNOT out of it! It really matters - trust me. For a large quilt, the rest of the process works better if you have another person to help you. Stand on opposite sides of the table, and each grab a corner on the same edge. Fold that edge back so that the edge is laying about half way back toward the center. Then fold it back again, so that one half of the batting is exposed. Shake the can again, then spray the batting from where the top is folded to half-way from the fold to the edge (just like you folded it before.) Wait the recommended amount of time, then unfold the top back over the batting, all the way to the edge. Press and smooth the sprayed section, checking to see that the outer edges will be where you want them. If everything looks OK, grab the same corners you had before, and fold the top back to the point that the spray holds it in place, shake and spray the exposed batting. Wait, then fold back, press and smooth to the edges. Move around to the other side of the quilt, and repeat. Flip the sandwich over, and do the same thing with the backing up. You will end up doing the fold-shake-spray-wait-smooth process a total of 8 times - 4 times on the front, and 4 times on the back. Flip it back over and give it a final smoothing all over the front. For a large quilt, I will also put the curved safety pins in places that won't interfere much with the quilting, 8 to 12 inches apart, just for insurance. Most importantly, when you start the quilting process, stabilize by stitching in the ditch around all the blocks and along the outer edge of the border, or wherever it makes sense to stitch, then move on to your decorative quilting. If you are using a wall instead of a table, the process would work the same. Good luck!