I'll go for the wolf form. Pay attention to my nose, that's usually the point I focus on. I'm not sure if I'm capable of going slow, but I'll try.

[Alucard knows Astarion has seen this before, but there's never been a real reason to study it.

He does try to keep the process slow. His nose elongates. There's natural fine hairs, then there's fur, then a proper snout, and so it goes with the rest of him. A step and he's crouched down. A second and his arms are on the ground. The third sees his coat now closer to fur, and the fourth reveals an entire wolf looking up at Astarion with big, soft gold eyes.

Easy, see?]