This tutorial uses fill colors to color. Before coloring, you need to find a similar image of a normal person for reference. Determine the approximate colors of each component of the character based on the reference image. Then you can apply color in layers. When coloring, pay attention to the details.
Original picture
final effect
1. Open the original image material, create a new layer, change the layer blending mode to "Color", set the foreground color to: #FADDD9, and then use a brush to paint the face and skin of the character, paying attention to leaving the facial features empty.
2. Create a hue/saturation adjustment layer with the values: +10/-45/0.
3. Create a color balance adjustment layer: Midtones: +10/-5/+15; Darktones: -5/+2/+5.
4. Create curves and optional color adjustment layers respectively, and set the parameters as shown below.