Super Mario 3, revamped and extended

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It may be nitpicking, but there's still a lot of banding going on that creates somewhat harsher edges than necessary.



I think you could break it up some more to get a smoother result. It may also help to seperate the colours to see if each single shade looks round enough (since banding tends to squish the inner parts into a less round and more hexadecagonal to octagonal shape).