Uses of Photoshop

[Runner]

What are creative ways of using photoshop on your images to enhance them? I'm doubtful about how far I should go on the edits since it may remove the original essence of the picture. It'll be nice to learn a few techniques that won't alter the image completely.

 

[The Aire]

Make different backgrounds behind a person.

Take a picture of a couple standing on grass with a treeline behind them and the sun beaming down.

Now keep the couple intact, but in the background, put a gloomy cityscape of old warehouses and gray skies.

Same couple, different mood.