Kids today are all about "the selfie:! This art project was a favorite in my classes.
This is a printable of a mixed media assignment I have done with my 8th and 9th grade students, but it would be good for any age. It defines "the rule of thirds" as a design concept. The sheet has full directions for the assignment. An example of one of my students' posters is shown as a preview. We used 12x18 paper for our posters but you could use any size. I also let them take the selfies in class with my phone unless they already had one saved somewhere else that they wanted to use.