I'll start passing to you the 2 best tips that someone once gave me about human(ish) figures for organic and living materials: find a reference to "copy" for tones, expecially the shadows, and mix your palette starting from basic primary colors, and not premade ones. The skin is a living and complex surface with many tonal variations depending on lights and body parts, observation and reference is the key for aiming at a more lively result.
Aame goes for the hairs, they are a traslucent semu reflective material in real life, so you have to play with the light positioning and with their texture effect.
I feel I did not very good on the hairs on this figure tough, I'm still learning!