Avoid storing wallpaper in its original packaging for more than 3 days. Remove it from the packaging and loosen the roll so it is not tightly wound. Leave it in this state for at least 24 hours before use.
To properly prepare the wall for wallpaper application, ensure it is smooth, clean, and dry. Fill holes, sand bumps, and wipe down the wall with a damp cloth 24 hours before installation. Freshly painted walls need 2-7 days to dry, depending on the paint type.