By the way, in the process of preparation, you need to level the ceiling and make it so that there are no large cracks, potholes and other flaws on its surface. But at the same time, do not worry about minor defects, since the wallpaper will be buried and close. Secondly, gluing wallpaper on the ceiling is a rather difficult test for the body, because in the course of work for quite a long time you will have to stand with your hands raised and his head lifted, and in general you will have to stand in an unpleasant pose, on an unstable surface, for example on the stairs or on table.