Which pronoun in the sentence is used incorrectly?

Fashion Sense

My younger brother Sergio applied for a job selling retail electronics at the mall. Good thing I was home on the day of his interview. As he was walking out the door, I had to stop him. He was wearing a light-green shirt with orange suspenders. Sergio was supposed to make him look good for the interview. Instead, he looked like a circus clown. I insisted that he change his outfit immediately.

Verified Answer :

make him look good, him is used incorrectly. It's better to say himself

Then the statement would be,

Fashion Sense

My younger brother Sergio applied for a job selling retail electronics
at the mall. Good thing I was home on the day of his interview. As he
was walking out the door, I had to stop him. He was wearing a
light-green shirt with orange suspenders. Sergio was supposed to make
himself
look good for the interview. Instead, he looked like a circus clown.
I insisted that he change his outfit immediately.