I actually really really like the dithering here, because the saturated blue and the grey blend really nicely into one other to the point where they look like a fifth color. I think my problem with this piece (damnit Q why can't you just be nice!!) is that the rays of light look a little too... liney and thus don't have as much form as I'd like?

Cool composition. Using blue as the extra colour was an interesting idea that's worked really well. Very effective as a final image, too.

Nice work! I would consider to raise the contrast between the black and the blue, it is hard to read.

Also, good ending :)