Besides that, you can also select a blemish on your photo using the free selection tool and then apply Gaussian blur to it to clear it up. We have discussed these steps in detail, so check out below.

GIMP is a free Photoshop alternative that lets you create and edit graphics just like Photoshop. In this video, I'll show you exactly how to use Gimp, step by step.

Use the Rectangle Select Tool to select a portion the main subject of your photo and as much background as you wish to include. Fill the selection with white.