For best outputs: Sampler: DPM++ 2M SDE Karras. Steps: 30, cfg 5.5, CLIP skip 1. VAE: not required. Pos prompt: this model can NOT create celebrities too well, getting close in some cases but failing at being exact. Its goal is rather to generate outputs with cinematic style. It may remember movie scenes, like for example, if you ask it "Scene from Terminator Movie" you may get Arnold as the Terminator. Quality keywords like "Masterpiece, 4k" ect may increase the quality some. Neg prompt: you can leave it blank or go with "text, watermark, blur, deformed, noised, drawing, fake looking, unrealistic, painting" for example.