Here's the edit i posted in the chat, like i said ill explain better here, just zoom in on bits to see what i mean
Like i said, the ying yang shading was just a bit too crowded before, try to keep the shading to the outer edges and some slight AA on the inner lining.
Also a more subtle change i made is to the blue suspender-things. You AA'd the lines which is totally appropriate but i fnd when you use the same length of pixels for AA as the line beside it, it still tends to give a pillowy effect. (hopefully that makes sense) So rather than three pixels of AA i just made it 2