I finally made a ball girl lora that works. It needs "no humans, chibi" and a 1.5 strength, or "(waddling_head:1.3)" and a 0.8-1.2 strength. May need "solid oval eyes" and "simple background" on negative.
Trained on the Pixai lora trainer, on illustrious 0.1.
Description
Makes chubbier chibis rather than proper balls. Using "A cute ball shaped girl, wearing a shirt and shorts that fit her shape." on the prompt makes them rounder.
Use a 1.3 strength.