>>3010267>Stiff unchanging expression(tries to keep the face in the same direction as the reference photo, less likely to morph to instathot faces when turning away then back-this is probably the most important for 3d game characters)
>Stationary motion(not required, but it helps with preventing movement toward/away from the camera-probably needed to make looping clips otherwise you risk characters walking in reverse/unnatural motion)
No idea if somebody has better prompts, please share if you know others
Ping pong can be used to loop the videos
