It bugs me that this isn't taken absolutely vertically - just really close to it. Really interesting shot, but something so form-al for me demands to be symmetrical. Lots of good things though: DOF, focus, light, exposure ...
Bang-on centre POV, excellent shot straight down the glass. Real sense of depth here, I like the dashes of colour in the centre of what is otherwise a monochromatic picture. Very good, 8.