Sizing the Walls
Sizing allows you to maneuver the paper into position on the wall without tearing. Sizing also makes later removal of the paper easier. Sizing is a watery consistency and should be applied with a paint roller and pan. The wall is ready to apply paper when the sizing is dry.
Priming Dark Walls
It is a good idea to prime dark walls if you are using paper with a light background as it will help hide seam misalignments. Use a basic white latex primer or perhaps a primer/sizing mixture.
Planning Your Layout
Start and finish your job in an inconspicuous place. Areas over doors, windows or on wall space that is somewhat hidden are good places to begin. By following this approach you will better hide any misalignment in your strips. Another good idea is to establish vertical guidelines. Hold the roll of paper up where you want to begin and make a mark one half-inch less than the width of the paper. Then use a level or chalk line to create a vertical reference point.
Applying the Paper