This is Photoshop tutorial for beginners of creating simple glassy Mac OS X related ball

1. First we must create circle with gradient. It must be complex, of minimum 3 color points.

Select Ellipse Tool and holding down Shift draw circle
In Layers window press Add A Layer Style and select Gradient Overlay
Click on gradient to edit it
Create few points with colors similar to this

2. We put our ball on white surface, so it must be shined by environment.

Add A Layer Style -> Inner Glow

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