OK, I fired up the new printer and have a lovely 11" x 14" photo printed and airing out, plus a precut foam-core and cut "acid/lignin-free" mat for it. How do I attach the photo to the foam-core/mat? The paper is Epson Ultra Premium Photo Luster, with a slick "plastic-y" feel to the back surface. Rice paste and hinges don't seem like they would work. What is an "archival" mounting method? I need to know today or tomorrow, because I am framing it tomorrow night. Thanks in advance.