The backing for your wallpaper is made from paper. It is possible your backing paper will scrunch or slightly crease either during transit or installation. This wont affect the end result of your wallpaper. Even if your wallpaper looks a little scrunched it will smooth on to your wall. See here:https://youtu.be/vGJ2cCDt9McIf the self adhesive accidentally catches itself during installation you can simply pull it apart. This wont affect the stickiness of your wallpaper.