What you will need is … A piece of ply wood cut to the size of your paper. Glue, a clear liquid glue is the best. Black paint. Matt polyurethane.
1 Have your wood cut to the correct size you want 2 Make sure the edges are sanded and smooth. 3 Paint the back and sides of the wood. 4 Drill a small hole in the back at the top in the middle so you can hang it on a nail. Don’t go all the way through, just half way. 5 Spread plenty of glue on to the back of the paper and press on to the wood. A ruler or a damp cloth can be used by sliding it lightly over the paper to remove any bubbles. Allow it to dry well and if any of the edges lift apply more glue. 6 Once it has dried properly paint the paper with a matt polyurethane. This will seal it and keep it place, also allowing you to be able to hang it in a bathroom or kitchen where it may get damp or need cleaning.
Beautiful old pieces of vintage wallpaper are also great to use and can be made in any size.