So, I just started playing the Dawnguard quest, and I want to know, how can my guy look like the vampires of the Volkihar.

You know, with the bat like nose and the distorted face, kinda like http://images.uesp.net/7/70/SR-npc-Garan_Marethi.jpg, http://images.uesp.net/8/8c/SR-npc-Namasur.jpg, and http://www.uesp.net/wiki/Skyrim:Rargal_Thrallmaster
IS it only an NPC thing? I read that you could look like that though. I'm just curious.