My friend is very into the style of war hammer and Andrea Uderzo
I was wondering if there are any painting streams/video tutorials by Andrea Uderzo or a similar artist?
He's got quite a few warhammer pieces, I think he does a livestream as well. : He does http://www.twitch.tv/nicholaskay
Do a Search for Karl Kopinski and Adrian Smith. To be Honest, I consider those guys to have the definitive Warhammer Aesthetic downpat because they were the guys behind the art when I was going through that phase. It was because of them I got into art.