Really really need feedback on my character

pipapopapa

The issue is it looks really fake and weird which is definitely not the goal, I'm trying my best to make it look realistic but currently I'm stuck, it's rendered in marmoset.

pipapopapa

Posting this as a ref/ what I have in mind, obviously mine is not going to even be close but I really want to understand how to get to such insane level

zetheros

the eyes are strangely glowing or unlit. Tertiary forms could be sharper. Add subsurface scattering to the skin