Photo-editing in Linux....

First, you need to see The Wizard.......

Next, you click anywhere on his picture to bring up the menu and choose what to do....

The Image Magick menu appears, and for every item on it, when you click it, another little menu appears with all its choices of things to do. You just keep choosing and clicking until you've found and fixed everything you want to change, and then you do that same thing to select it again for saving.

And when you're done all that, you have something like this, the snow report.