I want to modify Koji head a little in he has a damaged eye and have the lid shut, with a scar running down as face as per rough example.

Is this done in Poser, UV mapper or what.
Do I need to remove the eye from obj or just keep lid closed.
And how do I extract the changes I made from the original?

WIP
http://www.frankly3d.com/wip/wip_koji.jpg