Replacing a Dull Sky in Photoshop Elements

Notice there is less fringing around the dark hair and the sky looks more realistic. (You can also use this technique to create a very unrealistic 'alien' sky effect, but it would be harder to blend into your original image.)

Now there is just one more minor adjustment I would make to this image.

20.) Click the people layer, and add a Levels adjustment layer. In the levels dialog, drag the white triangle under the histogram to the left to until the input level on the right reads 230. This will brighten up the image slightly.

That's it... I'm happy with the new sky and I hope you learned something from this tutorial!