One of the many in this challenge that don't seem to be "well photographed". I'm affraid many images in this challenge were created with the "letter" in mind and everyone tossed out the window everything they had learned about photography. Although you have captured a "letter" in nature, I'm sorry, I find this photo uninteresting to look at. <4>
In a challenge where a 640 pixel by 640 pixel image at 150kB is allowed, Your submission at 270 X 179 pixels and a whopping 9Kb doesnt do your subject or yourself any justice.
Most common tip on DPC: Make sure the image is close to the maximum size allowed (640px on the longest dimension). Not to be mean, but the size ruined what would have otherwise decent entry. :(