LoRAの強さを0.7~1.0にするのがおすすめです。
LoRAと以下のネガティブプロンプトを用いると安定します。
ポジティブプロンプトを併用すると、キャラのリアリティが向上しますが、靴下の長さが同じになってしまいます。
（LoRA+ネガティブプロンプトだと靴下が左右で異なる長さになりやすいです。）
一応ポジティブプロンプトも添付しておきます
ポジティブプロンプト：
rulership(umamusume),umamusume,short brown hair,dark brown hair,white forelock,single white hair streak,short layered hair,shaggy hair,asymmetrical bangs,long bangs covering one eye,long sidelocks,outward hair tips,blue eyes,horse ears,dark brown horse ears,horse tail,long dark brown horse tail,hair ornament,green hair ornament,green ribbon ornament,black geometric hairclip,white geometric hairclip,oversized grey sweater,oversized sweatshirt,very loose sweater,baggy sweater,long sweater,sweater dress,distressed sweater,torn sweater,ripped sweater,frayed hems,small irregular holes,loose long sleeves,baggy sleeves,wide sleeves,asymmetrical neckline,left shoulder exposed,bare left shoulder,sweater falling off left shoulder,right shoulder fully covered,black bra strap visible on left shoulder,oversized grey clothing,bare legs,bare thighs,asymmetrical black leg warmers,right leg warmer noticeably longer than left,right leg warmer pulled higher up the calf,left leg warmer noticeably shorter than right,left leg warmer sitting lower on the calf,high right leg warmer,low left leg warmer,uneven leg warmer cuffs,slouchy leg warmers,loose leg warmers,ribbed black leg warmers,three black circular holes on the lower right side of the sweater,exactly three round holes vertically aligned on the character's right lower hem,three vertically arranged black circular openings near the right hem,white chunky sneakers,white sneakers,thick white soles,red shoe accents,red heel accents,red laces,casual streetwear,oversized clothes
ネガティブプロンプト：
Socks of equal length, symmetrical socks, matching socks, socks of equal height, symmetrical leg warmers, matching leg warmers, leg warmers of equal length, leg warmers of equal height, aligned cuffs, symmetrical footwear, clothing with text, text
