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saved by 22 people: superfamous, ivitopp, dipre, justincharles, nico, pali111, rkn, thomascattrysse, sarahdear, turbo2000, algo, ramsaystirling, mrandrewdean, simiant, omeedboghraty, crickett, celinecelines, tmonkey, sosososo, studiolvwp, bzzzzz, animated

This image reminds me of the principle proportion. The different sizes and the repetition of the squares show off the different proportions and also give it a sense of depth.