I find this rather weird, I would suggest adding eyelashes and removing the pink skin (Or making it more visible) in the corner of the eye. It makes the "eyeball" look like it's small, round and about to fall out.
This should have a new name or atleast change it to look more real. To me it looks like a skin coloured cave that has a massive hole inside it with a voiid inside that sucks you in and crushes you to death. But it should look more stone if that's what i'm thinking of. Looks nice though, cought my eye