weight 0.55~0.65 is best.

1girl, solo, long hair, blonde hair, brown skirt, white shirt, neck ribbon, white thighhighs, sleeves past wrists, collared shirt, thick eyebrows, hair ornament, long sleeves, blue ribbon, open clothes, bangs, pink cardigan, yellow eyes, high-waist skirt

Adding "animal on head" to the prompt creates a hamster "Gonzales" on Chima's head.

But the expression of the hamster "Gonzales" is not good. That's why I don't recommend that prompt.

(I am attaching some sample images.)