Place them on a new layer, applying next commands: Edit ? Free Transform (ctrl+t) and Edit ? Flip Horizontal and then mark out the sky, applying the Magic Wand Tool.



Erase it and make the necessary corrections on the layer's color, choosing Curves (ctrl+m) and Image ? Adjustments ? Selective Color.





We have to represent on a new layer above the background's one several markings of rays shape, applying Polygonal Lasso Tool and paint them out with Paint Bucket Tool.



Move off the markings: Select ? Deselect and change the layer's Blending Mode on Soft Light, minimizing also the Opacity till 35%.



Select the Gradient Tool for a new layer, situated above the rest of them to represent a kind of stretching of white color.