I'm not sure if the banding and noise in the background gradient is interesting or distracting. I'm leaning towards "interesting" at the moment. I like this a lot.
I notice serious banding/noise. If you sharpen using the LAB color space in Photoshop, sharpen the L channel and you then Gaussian blur the A and B channels with a blur of 5/ radius 1, you will see a totally different pix.