LOL
It really looks weird now
Due to scale the upper lip only has 2 or 3 pixels max. And I have no idea what you are trying to do to the mouth.
Those black spots work like lower lip shadow, not a mouth. So it "moves" the mouth up, making face proportions wrong.
The issue here is that dither is used to shade the face, hence any kind of mustache needs to be darker. On the other hand the nose uses bright which makes any yellow pixel on the upper part of mustache too bright, so dither will probably not work as you expect.
I had already changed it a bit when compared with the first version I posted, and it seemed an improvement.
That reminds me of a farwest gun slinger, like one of the guys from "The good, the bad and the ugly".
I don't mind that you play with the image.
It can work out as a nice way to practice.