Showcase images include embedded workflow* and are post-processed with sharpening and noise grain.

In other words, your results may vary depending on your workflow.

Recommended settings are below.

3DCG features with more detailed skin texture. (Heavily dependent on heun sampler, not recommended if using web generator or if you don't know what you're doing)
Face proportions closer to real life. Less anime like.

Will do beauty mark/mole under eye
Skin pores can look too smooth/uniform/unnatural texture depending on sampler/scheduler.
Backgrounds (res_multistep + normal with high steps 50-100 - has chance to resolve scale issues but might introduce artifacts)

initial sampler

upscale/hiresfix

realesrgan_x2 (only because it's fast - don't think it makes a big difference which ever used)
heun + normal/ddim_uniform(second choice)
steps 15-20, cfg 3, denoise 0.35-0.55
using heun as the upscale/hiresfix is what brings out the noise/texture

facedetailer

heun + ays sdxl
steps 7, cfg 2, denoise 0.3-0.4 (heun has more noise so lower by 0.1 than your usual)

Recommended lora

lightingslider = for darker images or at high CFG (max value -1.3/-1.4, don't go darker than this)

Remarks

res_multistep is fast and converges at high steps, fixes the structural problems 90% of the time.
usual euler/2m/3m + sgm uniform/normal/karass should work though
i prefer heun as it produces natural noise/texture at lower step values and loses it at higher (recommended schedulers: normal/ddim_uniform/ays+)
for prompt adherence: higher resolution can have lower cfg, lower resolution need higher cfg
personal frequently used resolution: 896x1120
post-processing nodes with sharpening, bloom, grain, tone curves for more texture in final image. (see workflow in images)

FUBUWA MIX 3D REAL