The recent test drawing was a big help because it made me realize that plopping a canine head onto the wyvern didn't work. So now the head is this. More stylized and a trickier angle
Adapting my shading actually isn't nearly as difficult as I thought. On the contrary, I can ease up on its complexity because the fur patterns contribute to the depth, too
The next new thing I'm going to try is drawing less coarse fur. I tried adding more detail to my art in the past, but it felt wrong because they wouldn't fit to the way I draw fur. And also other proportions, like the eye size.