Learn how to make a stylish star wallpaper.
Open a new file that must have
1024x768 px and
72 dpi. Then take the next tool

and represent the background for the picture to be.
Blending Options-Gradient Overlay
Gradient’s parameters: 
Choose the following tool now

and select the next cliché marked with red color.

Turn around the small cliché star, using the
Free Transform selection.