Depending on the ethnicity and skin quality of your face, you will need to adjust them in your own way. You should be able to get a decent color following these general color directions. Repeat the same process until you have all the colors you want on the face! Assign a black mask to this fill layer, choose a dirt brush with low opacity and low flow, and paint on the areas that you want the reddish color to show up on. To do that, add another fill layer that only affects color, choose the kind of red you wish in the base color slot. The next skin tone I want to work on is the reddish tone of the face. For this character, I wanted to make the skin a bit more tanned, because I imagine her being outdoors quite a bit, so I chose a brownish color. Which base skin tone you choose really depends on the character you are creating. To do that, create a new fill layer, let it affect only the color of the material, and choose your skin tone in the base color slot. The first color we create is a neutral skin tone color as a base for the rest of the paint.

Now that we have great displacement details, we can focus on the color of the face! While we are working on the color distribution, we will set the skin material roughness to pure white so we can view the color we are painting without the interference of spec. Laying Out Major Color Variations of the Face

Free skin texture for blender