How I wonder what you are... wait, what?
Here's O through U. I guess that's an S and a Q.
Out of all of the alphabet photos I did, the P probably looks the most like the actual letter. It's not terribly interesting though. On the other hand, I believe I got some points for the use of shadow as part of the Q photo, but in my opinion, it's a bit too hard to tell what the letter is supposed to be.