1. Open Photoshop. Open the image to
work with sky enhancement.

2. Make a duplicate of the background layer and keep
the duplicate layer selected. Change the top layer mode to "Color
Burn"

3. We need to reveal dark portion on the ground under
the sky. Leep the top layer selected. Select Eraser Tool. Choose
soft brush and erase the portion you want to reveal from the botom
layer. The layer palette will look like this.

4. The will get the enhanced sky as shown in the following
image.

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