in "backgrounds", select an image I've prepared or draw/upload one your self. press c key to start the scanning process and it will automatically convert after the scan in completed. the picture will be updated every 5 seconds and it take up to 2 hours to finish a detailed picture with no repeated color (but for more simple image it only took around 1 min) the program have a list called "history" that will really speed the job up, save it as remix to keep the list and next time you use it, it will be faster.
Huge thanks to @griffpatch for changing the scratch history with his ultra fast image scanner. If you like it, give me a ❤️ and ⭐️, thanks ^_^