Getting poses is sometimes hard. In some cases, one has to make their own. I suspect Madd Flair did some manual posing to get this shot. Or it could be built into the coaster, I have not checked. However, it looks very posed, unusual for built-in poses.
I doubt the image is taken from the Black Dragon viewer. Would be nice if they said. However, Black Dragon gives a ‘prettier’ render by default, thus my doubt.
From the How’s your avatar look today? thread Scylla Rhiadra spun off the thread Making Avatars Look Good in Black Dragon! Share Your Hints and Advice! (Link) This thread explains how people get those perfectly posed shots you have been wondering about.
NiranV the author of Black Dragon has been posting in the thread, so there is some good information and ‘how-to’.