To
replace a sky in Photoshop the first thing you will need to do is to generate a selection of the sky and use it to define a Layer Mask. After insertion the new sky into your image, you need to Match Color and lighting
In this tutorial, I am going to teach you how to use various tools to replace a sky in Photoshop. Such as, we can use a combination of Curves, Hue/Saturation, and Blending options to make everything blend together seamlessly.
Tutorial:
Step: Bring a sky sample on canvas you want to replace with original one.
Step: select the areas of destroyed enough areas to bring it natural and hide the extra sheds of the sky over the portrait select it with the lasso tool and draw a line just like an image
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