Balance: I used this picture for balance because I felt it shows balance very well. The trees side by side both framed by the window have some balance.
Unity: This was the picture I chose for unity. There are many rocks around the area where I live that have this smooth black look that I've always liked and collected, they look good together giving them unity.
Variety: I chose this picture for variety because Lego's have a lot of variety inherently. Lego's could be used for a number of the Elements and Principals.
Emphasis: This is what I used for Emphasis because even though there is a lot going on, the monkey is what catches your eye.
Movement: Movement was a bit harder to do. I eventually settled on this one because the ball teetering on the edge gives people the idea of movement.
Pattern: I decided to use this coffee table for pattern because the tile pattern is easy to recognize
Proportion: I used these Owl's for proportion because I think the different sizes show it well.