I'm trying to edit a character that has eyes with ugly black lines outlining the eyes (assuming this is makeup? Can someone provide instructions on how to edit out the black liner or swap the eyes entirely with a different preset? Is that possible?
1 go to skin textures. Now either it a makeup decal where you can -
2 remove it by choosing clear or replace it with select.
? it's part of the main diffuse texture and you won't be able to remove it.
You should check out the wiki section of vam also and get to know more about the app.
If the character uses a built in skin you can also look in the "Skin Materials 1" if it has an option for the "Face". Like in the Screenshot at the top right: