well i mean it might be easier if you had started with realism first but but iiiiii mean thats none of my business
really though, theres no tips or secrets, you're just copying it from an image
he's asking about specific anatomical details. how does the pupil, whose location is not entirely clear, contract or expand? does the iris simply fade in and out?
thats alot to guess upon considering all he said was
How the hell do anime eyes work?
if you really wanted it to make sense, you'd make the pupil a shape, it doesn't blend in with the rest of the iris. that of course is an anime style thing so idk