Follow these guidelines to create the allfamous orb.
Create a new image any size with a gradient background.(This can also be just one color)
Grab the "Elliptical Marquee Tool" and make a selection kinda like mine:

Fill the ball with black;
Add these effects to the ball:




If you did it good, you'll end up with something like me...add effects if you want..






10 Random Photoshop Drawing Techniques :
10 Random TutorialKit Materials:






More Photoshop: