That's what makes the contest interesting. Anyone can write an interesting 1k words about an interesting picture. But can you write an interesting 1k words about an uninteresting picture? Remember what G. K. Chesterton said...

(So far, judging from this page, it is easier to write an interesting debate about whether the rules require exactly 1k words and what is a 1k word entry, exactly, than about the picture. So far so good! We wouldn't want it to be too easy, after all. Gotta earn that $1k.)