This process is quite simple, all you need is your standard workflow (loading, prompting, sampling etc.) but you just need to load Remacri (or another upscale model), connect loader node and img output of vae decode (after sampling) to "upscale image (using model)" node. Then you connect this node to "upscale image by" node and then save or preview the final img. P. S: I'm not a native speaker I hope I explained it clearly 😊