With this workflow, you can easily paint into any image with the Flux Fill model. Simply select which image you want, right click the node and select 'Open in Mask editor', paint the area you want to change, 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 Fill: https://huggingface.co/black-forest-labs/FLUX.1-Fill-dev
