Charcoal sketch
https://en.wikipedia.org/wiki/Charcoal_(art)
Basic settings,
Steps: 8-12,
Sampler: LCM,
Schedule type: Automatic,
CFG scale: 1.75-2.5
Clip skip: 2
Model: UnstableInkDreamXL
freeu_enabled: True, freeu_b1: 1.3, freeu_b2: 1.4, freeu_s1: 0.9, freeu_s2: 0.2,
sag_enabled: True, sag_scale: 0.5, sag_blur_sigma: 2