I lay out my backing, taunt but not stretched. I use painters tape to hold it flat. Spray my baste. Lay on my batting, smooth out any wrinkles. Spray my baste. Lay on my top, smooth out and Taa-Daa, ready to quilt. Don't know if this responds to your question but this is my process and has been for about 8 years now. I spray carefully so the whole area has a light mist of the basting material. It works for me!