Honestly, it seems like the AI ​​is having a hard time learning what clothes are. I also don't know what tags could improve its understanding. It should be a poncho, for example, but the AI ​​doesn't know how to make ponchos.

With "outstretched arms" you can enhance the appearance of your sleeve feathers, I think...

In negative prompt I usually put the label "covered_navel", since the AI, for some reason, has a tendency to do so.

covered_navel,

I usually refine images with gimp and then in img2img. If you have any problems, please feel free to comment, although I don't promise to find a solution.

Character from "Is it right to fear...?"

『…恐れるのは正しいか?』のキャラです。

Personaje de "¿Es correcto temer...?".