Well, think of it in the order of the numbers and imagine what kind of edges it resembles...maybe check your grandma's memory albums ;-)
Since it's a puzzle game, I wanna try to keep it as a riddle but I think this already tells you quite a bit, I'm sure... ^_^ Unless you wanna get the spoiler, then I'll spoil it, too.
Spoiler ahead...don't read if you wanna puzzle it out yourself!
You need two more and then you have the order in which to tap the wall picture's corners once each in that order of the picture-frame corners depicted in the symbols with the numbers I think it starts upper left, lower right and then goes around counter-clockwise again... y.w.