The layer’s parameters:
Fill 0% on the layers:
Blending Options>Gradient Overlay
Gradient’s parameters: 
Make a copy of the recently made layer and select the
Free Transform option for turning over the copy and applying different parameters. The flare’s position should be corrected with the
Move Tool (V), opening simultaneously the here shown palette:
Blending Options>Gradient Overlay
The layer’s parameters:
Fill 0% on the layers:
Blending Options>Gradient Overlay
Gradient’s parameters: 
