Next, take the marketing objectives and the target population analysis, and apply that information to an analysis of the visual communication process. Try to match the ideas and the language with the identified marketing objectives. Having previously ranked the marketing objectives in order of importance, you already have a system for evaluating ideas and language. Don't let too many ideas, themes, or words convolute the entire advertisement. Three to five words within a space of 20'x20' works best.
Size is key to the content of the sign.
You probably don't want to mix too many media, too many colors, or too many textures. Think in terms of the visual communication process. Attraction is the most important step in the process. To attract, the attention of the consumer must be seized-and held. Once someone notices the sign, part of this process is achieved.