/ic/ - Artwork/Critique

new to trying to draw weeb stuff and digital.
I'm having difficulty doing self crit; if I dry to draw something realistic I can at least SEE how it looks
wrong and make an attempt to fix it, but with stylized stuff I'm sorta lost other than "it looks bad."
i.e, when i fuck up a realistic head I can see "oh, i did that nose real fucking badly, it looks too flat for this angle"
Are there something like those planar head models but for anime? Even in animu drawings I like it's hard to tell what the actual form of the head is/reads as flat, but it still manages to look appealing.

Also, lineart is hard, but I figure this is more of an issue with my actual motor control and underdrawing and will just take mileage.
That said, if anyone has good info on lineart 'theory' (use of lineweight, etc) or practice ideas I'm open.

pic related is not very good but the first sketch that doesn't make me hate myself
digital art can be a bit tiring, I have too much freedom and leeway to spend ages tweaking shit.