Focal point is the compass of your design. 

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It helps the audience navigate around your design giving your viewer a point to focus on first, then using organization of the elements and principles of design, directions of where to look next.  Focal point is the first thing that your viewers will notice in your design.  It is important to make it the most important aspect of your message.  If not, your communication could be lost.  Using the example of a sale ad again, the word ‘Sale’ will probably be a part of the focal point of your design because it is the main point for the communication to begin with. ("A Graphic Design Primer, Part III: Basics of Composition.")