https://blendermarket.com/products/blender-live-paint-filter

I made the Blender Paint Filter to empower digital artists struggling to match that traditional feel that only comes from physical artwork. With this tool you can create spectacular pieces of artwork. Whether you are a beginner, intermediate, or professional artist, YOU can create beautiful paintings using these tools at your disposal.   This is a live feed camera filter that can be assigned to any object in your scene. Once your scene collection and camera are input into the geometry nodes you will see a plane appear in front of your camera that will reflect the scene you have behind it!