With this workflow, you can easily remix any image with the Flux Redux model. Simply select which image you want, adjust the settings (in pink and blue), enter a prompt and your are good to go.
This workflow features an Image comparator that lets you compare your initial input image and the remixed version with a slider. There is also a Power Lora Loader with which you can add many LoRA's without creating extra nodes, thus you safe a lot of workflow space.
Flux Redux: https://huggingface.co/black-forest-labs/FLUX.1-Redux-dev
Clip Vision Model: https://huggingface.co/Comfy-Org/sigclip_vision_384/blob/main/sigclip_vision_patch14_384.safetensors