Disguising the human form within piles of items like these bricks, helps break up the lines of the body because of the chaotic appearance of the mass of items. It is easy to hide the form in the chaos. It also helps the artist keep the color palette simple.
This is truly the hunter's dream. I think this is just about as perfect you can get in hunting camouflage. The coloring and the pattern are completely right for the environment. That is not always the case when folks go out there in their camo gear. Do you look like this when you're out there?
Once again, multiples of items are used to help hide the human form. Even though, all of the cell phones are individually different looking, the whole of them place together creates a uniformity that makes the eye clump them into one visual. To even more camouflage the body, the cell phones are not really placed in straight lines, which they seem at first glance, but they are off-set from each other to help further disguise the curves of the body.
Sometimes artists who specialize in camouflage will use their talents for events, so, that patrons get a "living piece of art" experience. Either that or a really good scare when they realize that the part of the garden they are looking at is not all plants and flowers. Seeing a picture, where the eye is tricked by the camouflage applied to a person is one thing but actually seeing it live and still being tricked, is quite a feat for a visual artist.