question to artists, when u shade dark skin, do u focus more on the highlights or shadows? which do you work on first?

i want to improve on shading dark skin because zabella has dark skin, but i& #39;ve approached it the same way i would w lighter skin which probably isn& #39;t the best.

i had this thought after seeing this amazing piece and i wondered if the artist started out with the highlight shade as the base or the shadow as the base color. https://twitter.com/stephpeppery/status/1308227415496298496?s=20">https://twitter.com/stephpepp...

i always start out with a base color and focus more on the shadows than highlights. but i once saw an artist i follow (i forgot which one i& #39;m sorry ;w;) say that the magic of dark skin is in the highlights, while for light skin it& #39;s in the shadows. what do you all think?