AP Art concentration

For those unfamiliar with the AP art portfolio, there are three parts. Breadth, Quality, and Concentration. They each showcase different abilities and attributes of the artist. The breadth and quality are both 12 unique pieces of art. The breadth showcases the ability of an artist to work in different mediums, different subjects, and just general breadth in the ability of the artist. The concentration is my favourite portion. It showcases the artist' ability to move a single idea through twelve pieces of art.
    I've noticed in my sketching that I tend to experiment a lot, but what I seem to go back to is cityscapes. Lots and lots of cityscapes. Abstract, realistic, futuristic, grunge, you name it. For my concentration this year I've selected a certain sort of abstract cityscape. It's based off of low-poly designs, but with my own abstract little twist. For example, This is a rough I made tonight for a painting I plan to do later:

I love the small amount of detail it takes to create such complex, unrealistic forms. I love the idea, I know it's one I can get behind for 12 works, so here I go. I just need a more comprehensive idea of what I'm doing.