Vtuber Giwi from:
youtube.com/@GiwiVT
twitch.tv/giwi
The model captures Giwi's expressions quite well without having to specify them.
The model doesn't generate her stomach mouth well most the time, and sadly it is tightly connected to the 'Giwi' keyword, so it is hard to avoid.
For a better model, it might be smart to generate some Giwi images without the stomach mouth, and train a 'stomach mouth' keyword for it.