Wow! I so adore this one! IMO the photo doesn't show it very clean, but the highlighting of his flesh looks very nice. It's true that the flaming axe isn't as khornate as a blood dripping one, but I dig the flame effect, and it looks striking together with the flames coming out of his head.
BTW is the pose with the hand pointing out converted? Very cool showing off.
Good choice for the highlighting color in the wings. Very nightmare like.
Oh and where did you get that little guy from? He's so damn cool I need one like that for a base of mine too :) Very chaosy and stylish base you gave the prince, too.
So THAT´s a good one! The only thing I dislike about him is the orange-looking axe. Something rustier (and bloodier!) would have looked better IMHO. ;)