Your signature is the part of your handwriting that says the most about your personality. It is quite normal for your signature to change during your life, as your signature reflects how you evolve as a person. It is also common to have several signatures, for example a more formal signature (name and surname) when you sign a credit card or passport, and an informal signature (just your first name) when you sign a birthday card.
Your formal signature
A signature usually contains either a first name and a surname, or initials and a surname, or, less frequently a first name and initials. Your first name represents your private or family self, and your surname represents your public self, how you are socially and at work.
If your first name is more prominent in your signature, this implies that you have positive feelings about your childhood and that your 'private' self is more important to you than you 'public' self.
If your surname is more prominent, this means that your 'public' self is more important to you. The more space there is between your name and surname, the more you wish to keep your public and private self separate.
If you use only initials either for your first name or your surname in your signature, this means that you are more secretive about this part of your personality (your private or public persona).
Your formal signature
A signature usually contains either a first name and a surname, or initials and a surname, or, less frequently a first name and initials. Your first name represents your private or family self, and your surname represents your public self, how you are socially and at work.
If your first name is more prominent in your signature, this implies that you have positive feelings about your childhood and that your 'private' self is more important to you than you 'public' self.
If your surname is more prominent, this means that your 'public' self is more important to you. The more space there is between your name and surname, the more you wish to keep your public and private self separate.
If you use only initials either for your first name or your surname in your signature, this means that you are more secretive about this part of your personality (your private or public persona).