How to write a person's description:

1. Identification.

2. Physical description. (tall, nice, ugly, thin…)

3. Personality.(disagreeable, hard-working, generous, energetic…)

4. Likes/ Dislikes/ Hobbies/ Habits

5. Conclusion.

For example: RAFA NADAL
Rafa Nadal is a Spanish player. He’s an excellent player and he’s very famous. He’s tall, strong, athletic…
He's got medium-length, blond hair. He always wears sports clothes. He’s hard-working, energetic, competitive and
generous but he’s a bit dull and inexpressive. I guess he likes sports, especially tennis.