Get the reader's attention is the most important of design sign board. The whole point of creating a sign board is to communicate a message, making it memorable in the mind of your reader. In order to do that, avoid a boring, generic design that gets your point across, technically speaking, but fails to hold the attention of the reader. The purpose of design is to stir visual interest. Generic sign boards are all too common, and though they are easy to design, they lack the imagination that it takes to actually hook your reader. Creating visual interest is all about contrast, whether it's with the use of size, color or format.
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