A delicate blue tone is the ideal color for enhancing monochrome winter landscapes.
1 Duplicate the Background layer
This effect is created by merging two identical layers. Start by selecting Layer > Duplicate Layer, so your Layers palette looks like the example above. Click on the copy layer so it receives the next edit.
2 Apply the filter
From the Filter menu, choose Adjustments > Photo Filter. From the Filter drop-down menu, choose the Cooling Filter (82) and set it with a 51% Density, as shown above. The image will now be deep blue in color.
3 Blend the layers together
With the copy layer still active, choose the Soft Light blending mode, as shown above, to reduce the intensity of the color and enhance the overall effect.