great take on the challenge--this book scared me as a kid, a few years later, the movie still freaked me out! :) i love your idea, the lighting is nice and the composition is fantastic. nice work.
I love the texture of the bark and the composition is also strong - that diagonal of dark at the top left works well for me. Of course, the key element is that strong eye contact and the three fingers too are an excellent touch. Very very slightly too dark for my tastes but not enough to stop it being one of my very favourite entries in this challenge.
Reminds me very much of the knothole in "To Kill a Mockingbird." A nice picture, and I like that the bark doesn't cover the whole frame. The space in the upper left adds some definition.