You should try setting the wb to a more neutral tone next time, this is too yellow for my taste. Also, the image is very flat, could improve vastly if you had increased the contrast a bit. Meets the challenge though, no problem there :)
I like the concept of the shot, but think that the pencil could have been slightly more in focus. Also, I wish that the white balance was adjusted to cool down the tones of the image a bit and avoid that yellowish-grey color of the paper.
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