Time to share
Step 1: Add a layer Gradient
Make sure gradient is from top to bottom ....you may need to click reverse tab. Notice how the shot looks now
Step 2: Change Blend mode from "Normal" to "Overlay"
Job done
You can of course add another gradient layer & I find around 20% opacity is the limit. You can also play with gradients to alter how far they come down the screen.
Anyway , hope it may be of use & happy playing