For best outputs: Sampler: DPM++ 2M Karras. Steps: 26, cfg 7.5, CLIP skip 2. VAE: none. Pos prompt: use quality keywords to enhance overall quality, for example, "(masterpiece, top quality, best quality, official art, beautiful and aesthetic:1.2)". Neg prompt: "(worst quality:2), (low quality:2), (normal quality:2), (monochrome), normal quality, lowres, watermark, badhandv4", being the embedding "badhandv4" included in my example runs. What changes from v3.0 to v4.2: input_image feature. Checkpoint Merge.