Peel-and-stick wallpaper, without bubbles.

The short answerTo hang peel-and-stick wallpaper, start with a clean, smooth, fully cured wall and draw a plumb line with a level. Cut panels 2–3 inches long, peel the top few inches of backing, and stick the panel at the ceiling along your line. Pull the backing down a little at a time while smoothing from the center out with a squeegee. Match the pattern on each next panel and trim the excess with a sharp blade. An accent wall takes 2–4 hours.