The examples images are just text2img(except the first that was made with the sd ultimatepscale extension), if you use hiresfix or impainting you can obtain better results.
Psdt: in the example images i forgot to add 1girl, solo tags, but are recommended.
Eyes: ringed eyes, and red eyes or orange eyes.
Hair: single braid, hair over one eye, black hair, or short hair and hair between eyes (for her first appear in the manga)
Clothes: just use sweater or turtleneck, and add tags to modify it at your taste like long sleeves, bare shoulders, short sleeves, etc.
I was trying to make one of nikaidou from dorohedoro but i don't like the result.