>>374657323
Facial expressions using shapekeys go in the FX layer
https://docs.vrchat.com/docs/playable-layers
Base: Stuff that should always play, react to movement (like locomotion), or the locomotion state of your avatar (running, falling, crouching, etc). Transform animations only.
Additive: Stuff that Base is already using, but you want to "add" to it-- like a breathing animation. Transform animations only.
Gesture: Things that get triggered by hand OR by the Expression menu. You can also use this for "idle animations" like a wagging tail, flapping wings, or moving ears. Transform animations only.
Action: Full override, similar to AV2 emotes. Transform animations only.
FX: Same as Gestures, but for everything that isn't a Transform position, rotation, or scale animation.