Lora makes the elf's ears not as long as they are drawn in most models. Works best with portraits, also suitable for inpainting in "only masked" mode.
Trigger word: half-elf ears
Weight: 0.7-1
Sometimes, if the model is well trained in fantasy, it may be necessary to add "elf ears" and/or "elf" to the negative prompt to convince her not to draw long ears.