This is a very interesting concept, with a very nice execution! I liked the textures and the use of different color shades to make light and shadow. I also liked the irregular aspect of the pencil, it looks like it was carved and not sharpened with a pencil sharpener. Seeing that the line traced by the pencil is a dark shade of blue, similar to the other shaded areas, I would only suggest that the pencil itself had its own shadow, too. Overall, a beautiful piece!