Okay, somebody gave this a score of 1. I don't think it's worth that low. I think it's a 3... To give some pointers:

1. don't center your artwork in the middle.
2. put more content on the edges.
3. Use what you're given to inspire your artwork.


Keep in mind that this is collaborate artwort, not small squares of personal art. You're supposed to "go with the flow" and create artwork together with your neighbourns.