Photoshop – Quick Select to change background sky

Open the stonehenge.jpg and stormysky.jpg images Select all of the stonehenge.jpg image (Apple+A) , cut (Apple + C) and paste (Apple + V)

it onto the stormysky.jpg image

Use the Quick select tool to select the stones and the foreground

Go to ‘Select> Modify>Feather’ choose 5 px to feather the selection

Select Quick Mask. This will mask out the sky. Finally add a Curves adjustment layer to darken the stones to match the darker sky