@yukinoh1989 My apologies for the delay – Finally got around to critiquing your sculpt WIP!
I think the biggest piece of advice I can give is to get hair on the bust sooner rather than later. Bald human heads in this kind of style often look alien until hair is added. Even if it’s just a simple proxy, I think the context of hair helps a lot.
As for the facial anatomy, the pieces of the face are all there, they just need some pushing and pulling in the right directions to read more human and more like the reference. That’s difficult to type out so I sculpted some small adjustments to your head and stored them as a shapekey you can turn on and off:

Love the style you’re going for! Keep up the good work 👍