If you want to flip or mirror images then you can use the free GIMP tool. It is very easy to do so using this image editor for Windows PC.

This software can also be used for making pixel art, which is a digital art form drawn and created using pixels as the only building block. How to create Pixel Art in GIMP ...

To use the GIMP image editor as an example: Click Art & Design, then GNU Image Manipulation Program.

First time using the GIMP program on Windows. I have a HP M477FDW installed and ready to be used. Not sure how to scan, checked the GIMP manual it has no keywords of scan, scanner or twain.