If drawing "player characters", I usually take heavy inspiration in the game's armour sets.
With NPCs and monsters, I manage to deviate a bit more. In this case, this is Garrosh's armour from before his redesign, the red "Death Knight starter set". Only, it's the way I remembered it, since I drew this without looking at the armour.That's why it's missing some distinctive features and at times looks so different.
To be honest, I shaded it with my fine-lead pencil (I think that's how you say it) out of curiosity. I liked how much better it looked with so little shading, but it's not a technique I want to develop.
Many thanks, mate. Though I prefer my Saurfang in terms of armour design, I think Garrosh has really turned out to be the most life-full drawing in my gallery, as well. I just try to deny it because I really hate how poor his armour turned out.