Here is a skull study I worked on today and yesterday. I took my time with this one, I really wanted to learn more about the skull. Here are the results: Here is the Base Mesh I made and used here for this:
Not bad. I think you need to spend more time in the lower subdivisions though. At the moment it looks more like a dude with burn scars than an old guy. You need to focus on the underlying bones,fat and muscle that create the planes of the face. You've missed some important landmarks on an old person's face, hopefully this…