A new feature in PSE 2021 -- Perfect Landscape (Guided Edit>Special Edits) -- comes with only 12 Sky images. Can I add my own images?
You cannot add your own images; it seems Adobe allows only 12 Sky images. You would have to use a workaround -- replace the Adobe Sky image with yourown.
1. Rename your image to match the one you are replacing. Ex.: PerfectLandscapeBackground1.jpg > PerfectLandscapeBackground1.jpg 2. Go to C:\Program Files\Adobe\Photoshop Elements 2021\Required\GuidedEdit\PerfectLandscape. 3. Delete the corresponding Adobe image. 4. Paste your own image.
This workaround works just fine in PSE 2022.
Before you do this, make sure you make a copy of the Adobe Sky image and save it somewhere on your computer (out of PSE's reach). In case something goes wrong, you can put it back.
When you launch Perfect Landscape, you will see NO changes in the given thumbnail. However, when you select it, your own Sky image will be applied.