I like the variety of colors, what I would have liked more is to see lines from the pencils going to the wrong colors across the white space. Still nice work 8
Awesome use of negative space and color. I might have liked to have them more to the left or to the right (rule of thirds), but it works great as it is.
I bet your kicking yourself for that little black smudge near the top pencil :D
Great idea though. The lighting on the pencils could be increased slightly.