Human TF - Optimus Prime

I've started a series of drawings of Transformers in human forms. So far I think this is one of the best, Optimus Prime, leader of the Autobots. I decided to move onto Decepticons once the main Autobots have been drawn. In my opinion this look of him suits both G1 cartoon and the live action movie look, when you think about Peter Cullens voice. The agial marks on his face represent long age, and numerous battles, giving him a long time military experience, as well as his voice gives the character tremendous strength. But the rest of the judging is up to you people.
NOTE: If you have requests for other TF in human form, let me know! ^^