Dude, stop.
Look at your arm, and then back to the arms of this dude. Notice how there's two parts to it, and that it varies in width, instead of whatever's going on with your dude's arms?
The legs are even worse. Where are his knees? Why are his legs just long knobbly rectangles? Why doesn't he have anything resembling hips? Where are his feet?
The cape seemed alright up until I realized that the shading didn't have anything to do with how it actually folded. Seriously, that's the easiest thing to fix - just shade where the cape's going away from your light source [which is... where? From the left?] and highlight where it's directly in it, and doing the same highlighting/darkening for exterior/interior creases.
All this boils down to one thing, though - I'm getting the impression that you have no idea how the form of anything you are drawing really works. You're shading, but it doesn't have much to do with the forms of the stuff you're shading. You're dithering, but with it you're just adding noise, without adding much actual information.
I mean, just look at this. It's a complete mess - it looks flat, half the thing is noise, and it doesn't even look like goop [or whatever that character is supposed to be].
I really don't know, man.