IMPORTANT: NO TRIGGER WORD. For best results, do NOT mention "biting lip" in prompt (see below)
STRENGTH: 1.0 usually good, up or down as needed
Version 2 is much improved!
Reason for no trigger: klein interprets "biting" more like "feeding", which almost always involves a hand. Instead of forcing the lora to remove the hand like I did in V1, it made more sense to train without mention of biting or lips.
I tried doing side/middle in the same lora but they often got mixed or combined, separate loras is much cleaner and almost always gives expected results.
POTENTIAL ISSUES:
affects all mouths in image
sometimes teeth are janky, more of a klein problem
no control over which side of lip to bite, klein isn't great at left/right body parts anyway so not worth trying