1. First, turn on the computer, right-click the blank space of the computer screen, and click the "Personalize" button.

2. Then click the Select button in the new interface.

3. Then click and select the "Window Color" button at the bottom of the new interface.

4. Then click and select the "Advanced Appearance Settings" button in the new interface.

5. Then click the "Project" option in the new interface, and then click the "icon" button.

6. Then click the size behind it in the new interface to start customizing the size of the desktop icon. When the settings are complete, click OK.