A step by step guide to design a Professional Security Icon. Begin by creating a new file (
File>New) with
450x450 px and
72 dpi.
Try to represent now the primary layer of the next sphere we want to draw on the central part of the picture. Use the
Ellipse Tool (U) for this operation.
The layer’s parameters:
Blending Options>Inner Shadow 
Blending Options>Inner Glow
Blending Options>Gradient Overlay
Gradient’s parameters:
