How to choose the wallpaper for the bedroom

It seems that it would seem that a difficult thing in the selection of wallpaper? Acquired the recruiting, glued the walls and are the effect. But often the effect is either insufficient, or ceases to delight almost through a couple of months. So that the idea of ​​replacing wallpaper for the bedrooms in the living space does not come for a long time, it is necessary to approach their selection correctly.