Well Aside From The Previous posts .
In Some Way The Guy Looks Older , But As MMOJ said , It Looks Like He's Taken Alot Of Damage From Something . If Your Willing To Keep This Detail Then i Think The Metal Parts Should Have Some Damages too .
Also You Got Some plain Areas Which Need some detail even a lil would do good : *Nose - left Side of The head And Neck*
Even If You Want The Damage AS it Is Now . I Doupt That The Other Parts Will Stay That Plain
and Please Fix The Mouth xD /*soz for annoying typo* xD
My Goals:
-Becoming A Pro 3D Modeler For Games Or Movies And Video Editting