weight 0.8 is best.
I created this LoRA as requested.

Please read the description.

outfit1
1girl, solo, long hair, black hair, hair scrunchie, low ponytail, blue eyes, mouth mask, school uniform, blue shawl, red bowtie, collared shirt, white shirt, short sleeves, pleated skirt, black skirt

I uploaded a sample image of the outfit as a post.

Due to the small number of images in the dataset, the character's clothing or pose may not be fully realized.