do (someone or something) justice
To represent someone or something wholly or accurately. Often used in the negative to emphasize that someone or something is better than has been portrayed. You're a great singer. You just need to be in a band that does you and your voice justice. I think you two will love this house once we get inside—the pictures really don't do it justice.
do yourself justice
COMMON If you do yourself justice, you do something as well as you are capable of doing it. I don't think I can win, but I want to do myself justice. The selection panel was impressed but felt she did not do herself justice in the interview.
do yourself justice
perform as well as you are able to.ˌdo yourself ˈjustice
do something as well as you can in order to show other people how good you are: She’s a very good painter, but in her recent work she hasn’t done herself justice.He didn’t do himself justice in the match. He hadn’t trained hard enough.