weight 0.9 is best.

This model is based on the SDXL Pony Model.

I created this LoRA as requested.

outfit1
aarina, medium hair, pink hair, ahoge, blunt ends, yellow eyes, small breasts, yellow ribbon, white shirt, hooded jacket, light blue jacket, open jacket, long sleeves, sleeves past wrists, plaid skirt, blue skirt, black thighhighs

outfit1 (pose) swap prompt : (yellow eyes ↔ holding sketchbook, covering face)
aarina, medium hair, pink hair, ahoge, blunt ends, small breasts, yellow ribbon, white shirt, hooded jacket, light blue jacket, open jacket, long sleeves, sleeves past wrists, plaid skirt, blue skirt, black thighhighs, holding sketchbook, covering face

outfit2
aarina, medium hair, pink hair, ahoge, blunt ends, yellow eyes, small breasts, yellow ribbon, white shirt, hooded jacket, blue jacket, open jacket, long sleeves, sleeves past wrists, plaid skirt, white skirt, black thighhighs

outfit3 swap prompt : (yellow eyes ↔ mask, covered face)
aarina, medium hair, pink hair, ahoge, blunt ends, animal ear headphones, mask, covered face, small breasts, wings, fishnets, grey jacket, long sleeves, grey shorts, leg warmers

outifit3 (un mask) swap prompt : (yellow eyes ↔ mask, covered face)
aarina, medium hair, pink hair, ahoge, blunt ends, animal ear headphones, yellow eyes, small breasts, wings, fishnets, grey jacket, long sleeves, grey shorts, leg warmers

outfit4 swap prompt : (yellow eyes ↔ mask, covered face)
aarina, medium hair, pink hair, ahoge, blunt ends, animal ear headphones, mask, covered face, small breasts, black sailor collar, pink neckerchief, white shirt, short sleeves, arm warmers, midriff, white skirt, suspenders, striped thighhighs, pink belt, checkered skirt, frilled skirt

outfit5
bbrina, gradient hair, pink hair, short twintails, ahoge, hair ornament, yellow eyes, small breasts, goggles around neck, frills, shirt, white coat, open coat, long sleeves, sleeves past wrists, midriff, purple belt, frilled skirt, layered skirt, purple thighhighs

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

In the sample images, used hires.fix and the extension Adetailer.