結局ネガティブプロンプトが結構大事ということなので、
どれくらいネガティブで違いが出てくるか検証してみました。

今回使うモデルとポジティブプロンプトは以下

モデル

anything_v50

Positive

1girl, solo, medium breasts, skirt, blonde hair, black vest, socks, brown footwear, bow, school uniform, long hair, shoes, jacket, white socks, bowtie, loafers, blush, kneehighs, pink bow, grey skirt, blue jacket, open jacket, pink eyes, shirt, one side up, white skirt, white shirt, long sleeves, star-shaped pupil lora:hoshinoruby_v1:0.9, outdoor, sunny, city, building lora:more_details:0.3, standing, upper body

1

参考URL	https://civitai.com/images/1818277
Negative	EasyNegativeV2, (bad_prompt_version2:1), bad-hands-5, (worst quality, low quality:1.8), bad anatomy, (monochrom:1.8), simple background, green background

2

参考URL	https://civitai.com/images/1739531
Negative	EasyNegative, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, (worst quality:1.2), low quality, normal quality, jpeg artifacts, signature, watermark, username, blurry, lowres graffiti, (low quality lowres simple background:1.1), (holding:1.5)

3

参考URL	https://civitai.com/images/1739531
Negative	EasyNegative, lowres, bad anatomy, bad hands, text, error, missing fingers, extra digit, fewer digits, cropped, (worst quality:1.2), low quality, normal quality, jpeg artifacts, signature, watermark, username, blurry, lowres graffiti, (low quality lowres simple background:1.1), (holding:1.5), (bag:1.5)

2とあんま変わってない...

4

参考URL	https://civitai.com/images/6369984
Negative	(worst quality, low quality:1.4),

もしかしてポジティブプロンプトが強すぎる？

5

参考URL	https://civitai.com/images/6174137
Negative	(worst quality:1.4, low quality:1.4), (bad anatomy), (inaccurate limb:1.2), bad composition, inaccurate eyes, extra digit, fewer digits, (extra arms:1.2), multiple views, badhandv4, physical-defects:2, unhealthy-deformed-joints:2, unhealthy-hands:2