How to Edit in Photoshop: Nondestructively!
Create two layers. In this photo, we’re lowering the exposure on the Colosseum.
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Create a mask on the top layer by clicking the mask tool (the rectangle with circle inside icon).
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The mask is white, so use the brush tool in the opposite color (black) to erase on the layer.
3
Draw on the top layer to expose the layer underneath (masks can only be black or white).
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The mask will no longer be blank; you will see the space you have erased.
5
Right click on the mask to delete it. Your two layers are exactly how they started!
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