Sorry for my previous comment,
Now regarding this image,
As you can see it is totally out of focus, low resolution, light is blown out.
I'd change the entire idea and try to come up with something different.
Keep trying,
I do not see how this image, especially presented in this way, meets the challenge. Your narrow depth of field does not work, the focus point makes little sense. The subject is plain and uninteresting
almost everything is blurry and out of focus, there is no frame or proper motivational message(text)...and maybe you have should enter the de-motivational contest since 90% of the people hate math
I don't know what to say about this, but 'm guessing that your saying that math's hard? Anyway's, i think it to be as a DE-motivational Poster vast it's math. The most hated subject at my High School.