This is a strange photo, which looks somewhat like Modern Art, but which actually isn’t (a pleasing phenomenon which I referred to in passing in this recent posting of mine). What it is is a photo of some home decorating:
Aren’t you supposed to put the glue on the wallpaper, rather than on the wall? Perhaps both? Personally, I chose my wallpaper by not caring what it was when I moved in and thus keeping it as was, so I have never done anything like this.
Also, what are those peculiar white marks on the right? They look like random smudges of white paint. But why are they there? Very strange. Presumably something else was being painted before the wallpaper went on.