I signed my driver's license with my real surname, and the word "horse" at the back was normal, which was what I wrote when I signed it in other places.
The signature should be in strokes, not graffiti. No problem. Don't you have an exam yet? The coach will help you with these things as long as you pay for these three exams. Isn't there a name on the ID card? Don't worry, I was scribbled, too. Later, when I found out, I paid attention.