* The walls must be clean, smooth, and free of defects before you start installing wallpaper.
* Not using the right adhesive: The adhesive you use must be compatible with the type of wallpaper you are installing.
* Not matching the pattern: If you are installing wallpaper with a pattern, make sure you match the pattern up correctly.
* Not cleaning up properly: After you install the wallpaper, make sure you clean up any excess adhesive.
* And finally, don’t forget to relax and enjoy the process! Wallpaper installation can be a lot of fun, so don’t let it stress you out.