This is basically for anyone who needs help with drawing their eyes. I did this kinda quickly, so its not wonderful.
But if you need details heres some

Delin: His eyes will be a little bit narrow instead of big and cutesy unless he is very happy then he will open his eyes more. His pupils will dialect like a lizard(or cat), bright light=thinner slits and Dark/black=Bigger slits. His irises will change color from purple to a maroon like color when he's extremely mad or fighting.

Haxlia: Her eyes are also slits like Delin's and will also change in lights. Her eyes are a bit narrow too and has long eyelashes. Her eye color is a darker red instead of a usual bright red. The 'whites' of her eyes change when she's mad or fighting as well. Her eye shadow varies between reds and pinks, depends on her outfit.

Sevethan: As you can see, he doesn't have pupils. So that whole area of the eye(Pupil and iris) is white, though the outer part of his iris has a black rim around it. The whites of his eyes, are red. He doesnt wear eye shadow really, he just wears purple eye paint around his eyes.

Volshana: Now her eyes are a little odd too. She doesnt have pupils really, Her eyes are cut into four sections by two lines and the intersection(or origin) kind of indicates where her pupils will be. Her eyes are two shades of Blue, dark and light, clearly when its bright light its the lighter and dark/black light its the darker. Her eyeshadow is a mix between reds and oranges.

I hope this helps someone besides me :3