Agree with @parkerBabyDiaperCompany - dithering should be used sparingly. Try to bust out a few colours!
In my opinion the dithering makes it look much worse. Dithering should generally be avoided, especially if you are not limited in colors.
Try to dither your shadows a bit and use a lighter colour! It's hard to differentiate the background and the foreground.
Awesome idea :D
I'm afraid I have no time left to change it!
This one will be a witness of my mistakes! ^_^U