Briefly describe yourself.
Try to understand the question properly....he is asking not for you he is askind about the important person in your life.
I'm French. I am 37 years old and I am not tall.
I'm French. I'm not tall but I'm not small short either. I'm 37 years old.
"I'm average height."
I'm french. I'm not tall but not small. I'm 37.
I'm French. I'm 37 years old. I'm neither tall nor short.