Sup!
This is a slider LORA that helps with control for the frowning on the eyebrows.
In regular prompting, this lora goes from -1 to 1.
Negative values make the characters more relaxed or even arch the eyebrows up. While positive values make them frowning and very wrinkly.
In my opinion though, the best way to use this lora is by inpainting, like in the examples shown. (with something like 0.6 Denoising strength).
In inpainting the range of this lora is much higher, going from -6 to 3, with all the respective in-betweens.
Mainly works for realistic models and haven't tried it much on anime or 2.5D.
Examples on how to control facial expressions with loras in this video I made. (hope it helps):
Trained with: