Signatures can be larger through emphasized height or width. The writer whose signature is larger than the rest of the writing believes that it would be to his advantage to appear to others more confident than he really is. This writer might want to appear that he enjoys the company of others more than he really does. Basically, he is trying to appear more positive, or more outgoing, than he truly is.
With the first name emphasized over that of the last name, or family name, the writer wants to appear more important than other members of his family.
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