How to make a sidscrolling backgrounding

I want to know how to make the backgorund images of a sidescroller
How do you keep the image with the player but at the same time it falls behind the player, making it feel like its far away instead of just inserting the raw background because if you do that it doesnt feel like its actually far away

 

Check the space shooter tutorial in the learn section for parallax scrolling. I think that is what you want