I crease the center of each layer at the top, bottom and side edges about an inch in, then I tape mine to the floor with masking tape,on the edge of the backing.I pull it rather taut. Then I tape the cotton batting with about (4) one inch pieces of tape per side , Then I layout my top. Align all of my centers and tape down the top using less tape than on the backing and then I use the little gardening kneeling pads under my knees and pin about every 6 to 8 inches.The safety pins glide right across the linenoleum.Once its pinned , I pull off tape layer by layer and have never had a wrinkle. One of the advantages of taping is you can walk on your sandwich layers to smooth out all wrinkles. :D**** The only tip I have for carpet is get the "T" pins, they are heavy duty. When you pin,push pin thru layers angle pin up and out from the edges , then pull back toward the quilt top. It gives you a nice taut hold.