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I found this example where the dithering style is just about what your are using and it seems to have more depth than yours:
http://www.pixeljoint.com/pixelart/3068.htm#
I therefore think that this, perhaps, like your kabooglah pixels is more about your color selections and overall contrast that needs some polishing.
Obviously, just trying to help and share, not tell you what to do :)
Thx for the grammatical correction :p