psWhy should we copy the layer?
The purpose of copying layers in photoshop is to avoid damaging the source image. Sometimes the image is damaged when editing. You can delete the copied layer, but the background image will not be damaged. .
Steps to copy a layer:
1. Open the image in Photoshop.
#2. After opening the picture, select the background layer.
#3. After selecting the background layer, press Ctrl J to copy a layer.
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Photoshop offers a free 7-day trial period. To maximize the use of the trial period, 1) sign up for multiple Adobe accounts, 2) use the student or education version, and 3) subscribe to Adobe CreativeCloud. Free alternatives include: 1) GIMP, 2) Photopea, 3) Krita, these software can meet daily image editing needs.

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