Look at rei here. well, actually, let me simplify the shapes of her face...

Ok, rei's head, is large. it is big. or at least... the head circle

it is VERY BIG, and that is not normal. people's heads aren't that big, hell even ANIME CHARACTERS HEADS ARENT THAT BIG. well what have you been watching? Chainsaw man? Jujutsu Kaisen? Demon slayer? alright, here.

look at tanjiro here:

his head looks normal, yeah? completely human despite being from an animated series. lemme break his head down

compared to rei

they look very different. that means i must adjust the way i do the proportions of the head. look VERY closely, reis mouth is closer to her nose, her jawline is very unnoticeable, her face feels... longer... you know? this is because of the time evangelion came out. most anime released in the 90s looked similar. look at sailor moon

you know why that chins shape looks off? BECAUSE I COPIED REIS. it looks close enough though to the point where the only difference between the two is the fact that sailor moons chin is more out there. so the style of the face at a side profile is merely a product of its time.