DIY Upholstered Wall Hangings. I wanted something oversized to cover the wall, but that didnt cost a fortune. I ended up covering three 4x8pink foam insulation boards from Home Depotin a large repeat, silk, damaskfabric, which ended up being much less than any art I would have found in that size. I just stretched the fabric around each board and staple gunned it to the back. You could also use spray glue for this application.