I mark the center of the top and bottom edge of my quilt top and my backing fabric with a safety pin so I know where the center is when I go to put on the backing. Then I apply the glue right to the back of the quilt top often at every seam or matching point. Just a dot. I do about a foot down all across the quilt then press it down onto the batting. Then fold over a bit more, dot the glue and press into the batting until the whole front is adhered. Then I flip the top and backing over, match up my pins and then apply the glue to the by either drizzling it on, or with dots in a grid, smooth it out and then leave it overnight or iron it dry. I don't clamp anything down or tape any thing. If it a big quilt I will roll the top and bottom on board but opposite to the way is supposed to go so the back of the quilt top faces up instead of down.