This is the regular ControlNet workflow with Upscale group to use it with SDXL_WinterRender LoRA
For workflow better to use next models:
LoRA: https://civitai.com/models/1401415?modelVersionId=1584123
Checkpoint: https://civitai.com/models/139562?modelVersionId=344487
ControlNet1: https://civitai.com/models/330313/ttplanetsdxlcontrolnettilerealistic
ControlNet2: https://huggingface.co/xinsir/controlnet-canny-sdxl-1.0
If you want to change the original architecture, not just convert the image to a winter render, bypass the canny controlnet nodes