weight 0.7 is best.
I created this LoRA as requested.

Please read the description.

outfit1
1girl, solo, long hair, blonde hair, hair ribbon, bangs, blue eyes, blue bowtie, collared shirt, blazer, red jacket, long sleeves, pleated skirt, white 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.