Halloween Discussion Forums, Costumes, Horror!

To stick them to the walls we used push pins. After they were all in place, my husband walked around with a spray paint can and painted them black. Can't notice them at all now. We had tried tape and that sticky putty stuff, but they kept falling down - the push pins have been lifesavers... eh, scen...

I bought a bunch of scene setters this year, and am wondering if there's a way to get rid of the creases they have from being folded. They've been up a couple days and I was hoping that they would smooth themselves out, but no such luck. Any ideas?