There’s the ‘avatar’ section in the docs with tons of info:
- https://create.roblox.com/docs/art/avatar/facial-animation/using-heads-in-studio
- https://create.roblox.com/docs/art/avatar
It’s lot to sift through imo, and, I don’t doubt it could be a lot better. A video from Roblox going from nothing to the final product would be awesome. Even though I know a lot about Blender, making an avatar for Roblox that uses a dynamic head feels overwhelming to me.