Is this the photo you want to fix? Because it is heavily over-processed already....
Otherwise:
Otherwise:
- with the Color select
tool, click in the sky to select the white. This will select all the sky, including the bits between the grass blades.. This will also select bits of white the the grass which is why you
- enter "quick mask" and paint in black over any parts of the foreground that look selected (not marked with red, so these bits should appear as white).
- make sure you have an alpha-channel (Layer ➤ Transparency ➤ Add alpha channel) and Edit ➤ Clear or [delete] to make the sky transparent (yes, this leaves a visible border along the rocks on the right, we comes to that later)
- add your sky layer, and move it under the image (I used a plasma, colorized, there are plenty of other ways)
- with the Eraser and a soft brush, erase the white edge along the rocks