it is no looky lous tell me if it helped you and give me some C+C on wether it's good or not
that super mario dithering example isn't really the best one to use.... In fact, thats the most simple dithering you can do (just straight 50% dither). I'd take a look at Monsoon2D's stuff. He's a grand master at dithering
I remember that pic. He is just an amazing artist when it comes to dithering.
As for the tut, it's probably a good idea to go more in depth on your descriptions.