@Larwick:
It might be a good idea to remove the spec on the adams apple.
For Creyas nose I have to say that I already defined it much more than i wanted to do, since I intended to go much more Anime with it, but it changed during the whole process =)
The more saturated pink color isn't exactly a color of the skin ramp, it's intended to be a more saturated (darker) red and I also used the color within the pink highlights.
It was intended to display a level of subsurface scattering next to the highlight due to strong light but I never tried to use this so far with pixel art, so it might not work without a soft gradient at one edge. Since nobody mentioned it so far I thought it works perfectly.
Another opinion on this might be helpful.
The light backdrop is just for showing purposes on DevArt like the castshadow. I intend to display the sprites on the same colors the characters use, however I most probably have to adjust the outline later anyways to achieve the best readability given to various backgrounds - thats why I currently use the darkest outline possible which are looking right - I can say from experience that it will work with busy backgrounds.
Edit:Larwick I played around with all points you mentioned
ANd I also edited a few othe rspots I remarked
I also changed how the overlap - I think they have now much more depth
Also adjusted some colors and erased some double used ones

