How to make a Scrolling Background on a SurfaceGUI?

Hi, I'm currently making a dumb Super Mario Bros project for funnos. I'm thinking of making a scrolling background behind some of the levels for the clouds that goes sideways. I don't really know how to do this, but I think this is how you would pull it off:

Have a ScrollingGUI, and a ImageLabel inside of it. Then you would customize that ImageLabel, then have a script to scroll the GUI.

If I can get this figured out, I might even be able to use it for some other stuff too. Okay, thanks.