In order to start repairs in any room, it needs to be prepared, especially if you make repairs yourself. Take all the furniture from the room, tear off all the wallpaper, remove the chandelier and prepare everything you need to start repair work.
First of all, you will need to determine the cold walls in the bedroom and walls that do not go outside. This is necessary in order to somehow protect the room from the cold from the outside. After you determine the cold walls, they will need to be found by building materials. They, in turn, will not miss the cold from the street and not give the inner warmth of the room. After, it is necessary to align the walls with the help of plaster. Smooth out all the irregularities, smooth out all the tubercles and cracks, so that the walls are even. The same should be done with the ceiling, unless of course it must be brought into a divine form.
After you level the surface of the walls, you can proceed to the wallpaper. Prepare the glue on which you will glue the wallpaper sheets. Close the windows and doors tightly (this is necessary for the fact that the wallpaper is better glued and did not fall off after a while) and proceed to the goss. When you glue stripes of wallpaper, pay attention to the fact that air bubbles do not form under the wallpaper. In order to avoid this incident, you need to learn special tactics how to properly glue wallpaper. To do this, you need to start glue from below-up, and carefully smooth the wallpaper along the entire length. After you have glued all the wallpaper, the room closes tightly for a day, so that the glue is completely dry. After everything dries, you can bring furniture and arrange it as you like, because now it seems that this is a completely different room.