First of all, from the general forum rules, if you had bothered to actually read them:
Keep in mind common sense:
Don't double-post.
Second, there is no really nice way to say this but you should be aiming higher than Skeddles's work, when searching for inspiration. By mimicking his work you are unfortunately mimicking all of his errors as well, but you've managed to lose some of his more interesting silhouettes in the process.
Third, what is it, anyways? Blob guy on a blank background? What made you want to pixel this? Why is it interesting to you?
Fourth, you are concentrating FAR too much on advanced pixel techniques than you are on basic forms and lighting. This is a common mistake, but one that you need to recognize and work on correcting immediately if you wish to make any reasonable progress! Things you should really not be worrying about right now:
1 - Dithering
2 - AA
Things you should concentrate on a lot more:
1 - Form & Lighting - this is the process of applying light to the shapes that you are rendering, and placing shadows in a way that helps use to understand the shapes better in 3D.
2 - Colors - While you've hardly put any color into this scene at all, you've used 1 small purple ramp and 1 small gray ramp. You should practice mixing your colors more, and choosing from a wider range of hues.
3 - Composition - why is your "character" packed into the lower right corner of the box?
To sum up, get more ambitious about what inspires you, and get a LOT more ambitious about your fundamentals, and you will do just fine
