Import the two meshes in Blender and modify the top of the hair to look like the actor. Delete the body mesh and export the hair alone at .obj.93% of original size (was 542x16) - Click to enlarge93% of original size (was 542x16) - Click to enlarge93% of original size (was 542x16) - Click to enlarge

Sculpt the tiny details in Blender, especially the nose. In Edit mode: trace the wrinkles around the nose. Modify the ear shape and Increase slightly the jaw size. 
93% of original size (was 542x16) - Click to enlarge
93% of original size (was 542x16) - Click to enlarge93% of original size (was 542x16) - Click to enlarge

Replace the two meshes in 3dxchange and export the new iavatar. Now to work on the hair textures increasing the specularity. 
93% of original size (was 542x16) - Click to enlarge
93% of original size (was 542x16) - Click to enlarge

Import the scalp base in Photoshop and modify the opacity, especially the sideburns. Let's see then what it looks like in Character Creator. 

93% of original size (was 542x16) - Click to enlarge

Not so bad but far from being sufficient. Repeat the process until the result looks good. 

93% of original size (was 542x16) - Click to enlarge

Let's see with this texture. After a few tries: quite promising ! 

93% of original size (was 542x16) - Click to enlarge
93% of original size (was 542x16) - Click to enlarge

Now let's try to erase all the imperfections on the skin through Photoshop. Concentrate on the nose and light the darker skin under the eyebrows. 

93% of original size (was 542x16) - Click to enlarge
93% of original size (was 542x16) - Click to enlarge

Looks better and better ! 

93% of original size (was 542x16) - Click to enlarge
93% of original size (was 542x16) - Click to enlarge

Increase details on the hands. 

93% of original size (was 542x16) - Click to enlarge

The skin needs to be darker. 

93% of original size (was 542x16) - Click to enlarge