Naturally Increased Light

The light of the sun creates texture. There are shadowy areas and spots where the sunlight can shine without interference. To control the intensity, you can draw more light onto a separate layer or increase already existing light. Create a new layer by going to Layer → New → Layer, or by pressing Shift + Control + N on Windows or Shift + Command + N on a Mac. Set the blending mode to “Color Dodge” and the opacity to about 15%.

                                                    Increase light on a separate layer.
 
Then use the brush tool with a soft brush, and hold the Alt/Option key to pick up colors from the area that you want to brighten. Continue to brush in some light, picking up appropriate colors if the background changes. This way, you increase not only the light, but the saturation, which makes for more realistic results.

The blending mode “Color Dodge” creates realistic results.