This week's theme is Balance. This image exhibits vertical symmetrical balance in that the dog and the bear are standing up opposite each other. I found this image on page 44 of Communication Arts from March/April 2013.
This week's blog theme is Unity. This image shows unity through repetition in that the many, individual blades of grass comprise a larger patch of grass. It also shows unity through color because all of the grass is roughly the same shade of green, except for the handprints, which provide negative shading and emphasis . I found this image on page 95 of Graphic Design USA from March of 2008.