Colouring?

[next root]

I need help on the colouring cause I cannot seem to get it right especially on the shading

[pallid ermine]

You are using pure black and grey for the hair. Black hair is never actually black. Its usually a really dark brown or a dark soft blue. Never pure black because we still see color bouncing off of it. Irl there never is pure black we just interpret it as that

[next root]

So do I use dark brown for her hair

[pallid ermine]

Well do you want it warm or cool toned

[next root]

Cool toned

[pallid ermine]

Then do the blue

[next root]

Blue on the hair?

[pallid ermine]

The blue one i mentioned

You see how they both can be interpreted as black? One has more of a blue tint but the other has more of a brown tint