I have difficulty describing it so just try it
The settings that I often use
VAE: from base/dmin-vae
Aspect Ratio: 1024x1536
Sampler: euler/euler_ancestral
Scheduler: normal
Sampling Steps: 30
CFG Scale: 4
GO HERE FOR GENERATE
Another version is open here my shakker to try it
STEP: min 10 - max 45 in comfyui
CFG: min 1 - max 15 in comfyui
Sampler:
Euler a
Euler
Heun
DDIM
DPM++ 2M Karras
DPM2
for VAE u can use from the CKPT or even from external -optional
high CFG = high CONTRAST