Create a Curves Adjustment Layer and use the settings shown below to increase the overall contrast of the scene.
Open the image “Bokeh”. Select all and copy paste in our scene. Change the blending mode to Screen and lower the Fill to 38%. Hide this effect in the underwater portion of the scene by painting in the layer mask with black.
Open the image “Flare”. As you can see there are multiply flares in the zip file. Select one you like and open it in Photoshop .Copy paste all in our scene and place it near the dove. Change the blending mode to Screen. Add a layer mask and hide the hard edges by using a black round soft brush in the layer mask.
Create a new layer from all the visible layers (Ctrl + Shift + Alt + E) and change the blending mode to Soft Light. Apply a 20px Gaussian Blur (Filter > Blur > Gaussian Blur). As you can see we achieve a very dreamy effect.
Create a new layer from all the visible layers again but this time apply a sharpen effect (Filter > Unsharp Mask with 60% Amount, 1pixels Radius and 0 Threshold.
Finally add a Gradient Map Adjustment Layer (Layer > New Adjustment Layer > Gradient Map) with the settings shown below. Change the blending mode to Soft Light.