/ic/ - Artwork/Critique

>>6714231
here's the ref. I know there's a lot of problems, like the right (from our view) eye being lower than the left, the ear, the lips. I did a mix of eyeballing and using my pencil for measurements and two-dimensional relationships (e.g. where the inside of the right eye is horizontally compared to the outside right nostril). I'm mostly curious how I can work on drawing decent hair, but other advice is appreciated