To be putting up wallpaper signifies covering up the old self (possibly superficially), particularly if the old wallpaper is not removed.
2- Wallpaper in a dream can have the same significance as clothes on a character. We may be wanting to make changes in our lives but need to experiment and get a proper lit - first.
3- The dreamer should metaphorically take a look at himself and be sure that he is being true to himself, as wallpaper often symbolises an outer facade of some kind.
What Does Wallpaper Mean In Dream?