KATE HOLDEN'S TOP PRO TIPS:
If you can't see the eyebrows through the hair, how the hell are we meant to read the expression!? Clearly any artwork in which eyebrows cannot be seen through hair is objectively wrong and the artist needs to remedy this.
How muscular a character is depends on how in-control they are in a situation. Muscularity is relative! Like hair length!
Chibis? NAH, the new hotness is when a character is childish or confused they get dot eyes like they're in an old European comic. Definitely funnier.