If you have not used the basting spray before, you might want to try it on a small project first. It took me awhile to get the hang of it but now I do pretty good. I start in the middle of the quilt, fold back the bottom half and then spray about 12 inches across; then I put that part in place smoothing a lot as I go. Then, I move onto the next section. I find this works much better for me than spraying the whole thing at once. Remember you can pick up and move the material if it doesn't lay right.