Starting digital painting, critique my first work please

[kinotvarrr]

Hi! I am starting digital painting. I have some fundamentals in traditional drawiing but not in painting. So I made this drawing in grayscale to better understand how to work with value. My process was:

1. Took a picture of myself with growling expression
2. Drew a sketch on paper and took a photo
3. Drew digitaly on top of photo
4. Made two masks for face and hair

Made hair abstract because I was not satisfied with what I was getting using brushes but I liked this version in the end.
I have uncertainty about the right side of lips that in shadow but didn't come with any solution.

I didn't pursue some particular style or result, just went with the flow.
I'm very inspired by the work of Egon Schiele and creator of Æon Flux Peter Chung.

So the work in question:

Very interested with your honest opinion. Thank you very much!

[brohawx]

Disclaimer : Any examples I draw or paint over here are
not what your art should look like. They are attempts are to show you a
theory, tip, or hack to give you a brainwave and motivation to improve
your skills. A white knuckled grasp at the next ladder rung. Only you
can decide what your art should look like.

Welcome kinotvarrr!

Excellent first portrait and digital painting attempt.

Since we are not following a style guide today I decided to show you how you could push values and form further in your portrait - as well as the edges, you will notice some of that traditional training coming through into the digital .

But over all very cool.

Ta for now.