Buy a mirror. Put letter stickers on it. Paint over the whole thing. Peel off stickers. (use canvas instead of mirror. Paint canvas what color you want your letters to be first, then letter stickers, paint over, peel off)
DIY Architectural Letters ~ Designing and constructing a letter. Instead of wet, messy adhesive, you'll be using paper packing tape to create a papier mache effect. Inexpensive and easy to use, it creates finished letters that are hard and durable.