Short simple answer needed?
What is a character sketch essay? I looked it up and the links and things were very long. I just need a short simple answer.
Start with his name, make a physical description (age, tall,short, etc.), some moral traits (he’s helpful, bright, etc.), what is he wearing, how he speaks, how he moves,
His cloths are distinguished by poverty / distinction / elegance / taste / showing social position / social status / education / lack of character education.
His nature: warm / welcoming / proud / sensitive hero is it shows by his action (tell why, his actions)
It si long because it is very important for the story and you can do it in many ways. Why don’t you read about it? You may learn something.