Your handwriting and signature are your trademark image !
Whenever we write or sign at the bottom of a document, we are committing ourselves into fulfilling what is displayed in the manuscript or signed paper, whether in the short- or long-term.

We write and sign, without really thinking about the manner we draw the letters.
Some of us write legibly. This indicates their will to come out in the open.
Others draw curves (round-, ring- or shell-shaped).
Some draw the letters in straight lines (in the form of an angle, pointed, accentuated or rigid).
Others draw arcades .

It's certainly not at school that we learn to write our signature! It can have the image we want! Everything is allowed! The juggling of letters, the most varied drawings, an illegible name …

Some imitate an adult's signature. This attests for their respect and affection felt towards this adult.
As a lucky charm, some imitate that of a famous person.