Actually these models I usually use with SUPIR... Ultra-realistic style with SDXL ... For best results, you still have to hire fix and upscale.

Negative:

low quality, worst quality, bad quality, low detailed, blurry, bad hands, poor quality, mannequin, doll, disfigured, jpg, toy, bad anatomy, missing limbs, missing fingers, 3d, cgi, open mouth, canvas frame, watermark, signature, username, artist name,

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Positive:

RAW cinema, 16mm, color graded portra 400 film, remarkable color, ultra realistic, textured skin, remarkable detailed pupils, realistic dull skin noise, visible skin detail, skin fuzz, dry skin, shot with cinematic camera.
The photograph should be taken with a Canon RF camera at a high shutter speed to freeze the moment, ensuring clarity in the details of her face, skin texture, and hair. The aperture should be set to F/8 to achieve a balanced depth of field, keeping both the subject and the winter scenery in sharp focus.
shadow depth of field, natural lighting, at a concert performance, anamorphic lens flare, 80s music clip background, colors, strong backlight, (top down:1.3), shot on Canon EOS 90D with Canon EF-S 18-135mm f-3.5-5.6 IS USM, photo by Robby Cavanaugh

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Use the same scorecard Below are the necessary settings for this Model:

Steps: 20 ~ 50 / Min: 20
-CFG: depends on preference (recommend 5 - 8 )
-Sampler: Euler A / dpm ++ 2m/ dpm ++ 2m sde + Normal / Simple / exponential.
-Adetailed is not recommended You should use premium after creating the image for the best quality
-You can use vae: none, sdxl, sdxl16
-For professional users, W/H should be 1024px or more and the steps should be high
-HiRes Fix: Siax_200k, Steps: 10, Denoise: 0.3-0.6
-Upscale: 1.5-2