Part of my facial expressions series. All of these LoRAs are designed to mesh well with each other and have low impact on your image framing.

Lower lip bite off to one side. I recommend not adding expression in most cases, but it may help in some. Anime models will need higher weight, other models stick with 1.0

Was surprised to see there were so few attempts at this out there! Still have a couple of things to work on (it overfits much faster than other expressions), but it does seem to work well with different subjects and blends well with a few other expressions.

Starter Prompts:

<subject>, lip bite

<subject>, lip bite , teeth

Somewhat counter-intuitively, teeth is sometimes a really helpful negative word and sometimes useful in the prompt, depend on whether you're getting too much or too little. smile is also sometimes really helpful as a negative if you have a particularly tooth-y / grinning-by-default subject.