We need to pay due attention when gluing the wallpaper in the corner of the room, since the canvas should go to two sides of the corner, and one width of one of them should not exceed 3 — x cm. The first sheet of the wallpaper is glued to the wall and aligned vertically not in the corner, window or door, but in level. It is necessary to open the sheet and stick with a margin on the ceiling of about 9 cm. and using the wallpaper brush, the canvas should be smoothed out from top to bottom. The following sheets are also glued and the ends of the wallpaper are cut into the level with the ceiling and floor with a knife.