1, open photoshop software on the computer desktop.
2. Click the New option under File Options in the upper left corner.
3. Click OK in the pop-up dialog box.
4. Select a layer, right-click and select Copy Layer. Layering refers to multiple layers.
5. Click Save As under File Options in the upper left corner of the software.
6. You can see that the default format is psd format, and continue to click the Save button.
7. Finally, you can see the saved psd file on the desktop.