I sculpt using light and shadow. I construct single or multiple objects and place them in relation to a single light source. The complete artwork is therefore comprised of both the material (the solid objects) and the immaterial (the light or shadow).
I'm not realistically suggesting we do something like this, but I love the way they have utilised the depth of the window space when hanging things. We have assumed that we want to display large images of faces, however we could consider smaller images, displayed with more fluidity.