@yukinoh1989 Oh no, you fainted recently from too much brain activity? Wow, yeah take it easier please. Really hope the class didn’t push you there 😳
If you keep watching the Piero course, I model the eye in 2 parts: an outter sphere and an inner sphere with a concave iris (like your Eevee). That more closely resembles actual [human] eyes and usually turns out best in a render.