How's the shading of the hair done here within the artist study of mashima_saki works?

[sami.hchaichi89]

How's the shading of the hair here done, are there any special layers that should be used here or solution to fix my mistakes?
is there a fundamental mistake here that prevents me from achiveing the same shading in this artist study of mashima_saki( they have both a twitter page and pixiv account)?
i looked for timelapses or tutorials or interviews of theirs but i found nothing.
i made two attempts with diffrent ways of shading but i figured out nothing.

[brohawx]

Give me a moment to look up your reference - and dilute what they do. I will make a demo explaining how to do it for yourself - breaking down the fundamentals as you go.

Meanwhile - please peruse the other extensive critiques I've provided for others while you wait.

Question - is there a specific image you are trying to study that you can provide the reference here? Its fine because the context is for learning purposes and not for publication.

From what I can tell this is the same image posted twice and maybe you meant to post the reference and the study?

[samiazertyop123]

This one of their works

[brohawx]

Just very very clean. Thank you! I'll work on a demonstration now.