I’ve seen Dragon Priest cosplay before, but nothing on the level of what Daniel (yeah, he just goes by Daniel) has pulled off here. This is cosplay on a higher level.
The costume cuts a definitely imposing figure. Daniel has added light-up LEDs to his staff. He’s even gone barefoot for extra realism.
Here’s a look at the Dragon Priest mask mold under construction in wax.
And here’s Daniel’s deviantART gallery, where you can see this and several other of his Elder Scrolls creations.