Does he have a round face?
No, he doesn't.
What does he look like?
He's slim.
What does she look like?
She has a round face. / She has long hair.
What does he look like?
He's old.
What does she look like?
She's short.
What does the boy look like?
He has small eyes. / He has short hair.
What does he look like?
He's young.
Who is shorter?
The boy is.
What does the girl look like?
She has big eyes. / She has long hair.
What does he look like?
He's tall.