Scoring is just a measure of how well you pleased DPC voters, and nothing else. I would say this scored over 5 because it clearly met the challenge. The reason it didn't score higher is because for a set-up shot like this, the DPC voter expects a Studio Shot, whereas this is more like a candid, with natural light (with blown highlights) and a soft focus (but not out of focus, imho). Ironically (though it's an irony that is now second nature to me), those are the very things I like about this photo. The natural light is much more attractive and interesting than studio light, and the shadows create strong diagonal shapes that add interest to the picture. I also think that it is the "candid" genre that caused you to put the book "upside down". In a candid shot, we're always looking at someone else, and when you look at someone else's book, it is always upside down! In a studio shot, everything belongs to the viewer. That is why most studio shots are dull. There is no tension between viewer and object.