/ic/ - Artwork/Critique

I'm a doodlemaxxer who hardly ever copied anything in my life so I'm trying to work on my observational drawing. I'm doing it hardmode without the measurement marking for bigger GAINZ so it's a lot shittier than it could have been probably. I can see where I went wrong with the proportions and such but I'm not sure how to fix that and get more accurate besides just grinding it out more.
Guess I'll have to dive into Keys To Drawing or check out Krenz's exercises for copying shapes accurately.