Ficou bem bacana, meu caro. Aposto que tu aprendeu uma tonelada de coisas com esse trabalho.

The lips look much much better now. The banding will be a bit more difficult to iron out.

 dat banding

 @Cure I did what you showed me, I took the contour of lip and tried to make more realistic ..

Just remove the outline, for starters. Lips aren't outlined in real life (other than those of certain hispanic females).

The outline separates them from the rest of the face, but the lips are a continuous part of the skin of the face, they're just a different color near the mouth. So rely on color contrast and not linework to define them. Also, due to the angle of the lips and the direction of most light sources in normal circumstances, the upper lip is often darker than the lower because it receives less light.

 You not made ​​big improvements after my edit, but it's great. This banding really bother.

 Thank @Cure for the tips, I also found it necessary to improve the lip, but I know how ..

A good step for you in terms of realism and rendering, but there's a ton of banding here that detracts from the image. the outlining around the lips is a little distracting as well.