Sometimes we create an image and it lacks something. Composition, lighting, perspective and colour all look fine but it just seems flat. The following technique will bring the pop back into the image.
Open in Photoshop
Duplicate the base layer
Duplicate the base layer again
Set first copy layer blend mode to 'screen'
Set second copy layer blend mode to 'overlay'
Adjust the fill and the master opacity level of the copy layers to taste
Note: adjust both fill and master opacity for each layer but leave the base layer untouched.
Fine tune the adjustments on the fill and opacity on the layers.
All in all should take less than 2 minutes.