I have done this several times with great success. I lay the backing down, batting on top. Pull the batting up and spray the glue on the backing. When glued, I press it from the backing side. This way I can remove any possible puckers. Then I lay down the backing/batting and spread the top over, pull back and glue. Again to the ironing board. Only one time did I get puckers in the back and it was at an edge where the backing came up. So now I go through the process and either pin, baste, or reglue the edges. Works great for me.