Thanks so much for your comments Jase.
I did leave the black point where it was, not knowing how the image was going to be affected by uploading to here on IIS. Typically one loses some measure of luminosity I've found. I compare the same local image in my browser and the one you're seeing, side by side, and it looks different just as a function of being in a different place. I agree with you wholeheartedly though, I usually prefer the shadow areas to be a little darker so I probably shouldn't pump the luminosity so much to compensate.
I'm not certain that this will be any better at this resolution, but here's another go.