Thanks for the comments, guys.
@olim: I wasn't a huge fan of this guy either -- something about the pose. But I really enjoyed painting him. There are all kinds of fun parts to work on in all kinds of ways.
Regarding the photography, I quickly wrote down some of the process on my site here:
http://www.warandpaint.com/2013/06/360-rotating-gifs/
@UnCool Villain: For the rust I did this:
Basecoat Tin Bitz (older, dark metallic color)
Washed with Vallejo Pigments Broum Iron Oxide
Washed with Devlan Mud (Agrax Earthshade)
Then Highlighted with Troll Slayer Orange, which I then glazed progressively more white into edge highlights on just the most raised areas.
The horns were quite easy:
Start with a base of Karak Stone
Wash with brown (Agrax Earthshade)
then gradually keep adding Bleached Bone (Ushabti Bone) with glazing medium to the areas you want progressively lighter, which in this case were the tips.
The trick with glazing is to just work on the whole model at once, applying very thin layers to areas you want to change the look of, moving on, and then reapplying it to the same areas once it's a bit more dry. It sounds very daunting until you actually start doing it, and then you cannot stop because it's too effective!