DIY Faux Brick Wall Paper Mural Panels from www.1wall.com. Apply with temporary wallpaper paste: boil 2c water in saucepan, mix 2 tbsp corn flour with a few tablespoons water to make a paste, then add it to the boiling water. Remove from heat and cool for about 1 hour. Bluetac pieces into place, then roller the mix onto the wall and press the panels back down and smooth out kinks and dry. Cut around edges with scalpel knife and seal down with more of the mixture.