Learn in this tutorial how to create magic orb. Create a new file that would have
1024x768 px and
72 dpi and select the
Rectangle Tool (U) to represent the background of the next picture to be.
Blending Options-Gradient Overlay
Gradient’s parameters: 
Choose the
Ellipse Tool (U) to draw a kind of illumination around the circle:
Fill 0% on the layers.
Blending Options-Outer Glow

Select the same tool just to draw one more layer reserved for the sphere.
