i think the pic is quite old and is more focused on the map but if you look to the right there is some concept art of the orc armour, i don't know if this has been posted already, but hey, there ya go....

http://www.scharesoft.de/joomla/almanach/images/1/1f/Artwork_-_Art_of_Skyrim_-_Himmelsrand-Karte.jpg