Recommended parameters:

Sampler: Euler a
Steps: ~30
CFG: 5-7

Recommended parameters(Upscale):

Denoising: 25-35
Scale: 1.4-1.5
Extra noise: 0.00-0.03

Prompt:

Positive

{prompt}
masterpiece,best quality,amazing quality,

Negative

bad quality,worst quality,worst detail,sketch,blurry,bad fingers,bad hand,bad feet,extra digits,(interlocked fingers, badly drawn hands and fingers, anatomically incorrect hands),signature,nude