Wearing your older cousin’s jacket doesn’t make you a copy of them. Nobody wears it the way you do.

Borrowing is how anybody starts. You take the jacket, the slang, the way somebody older stands, and almost immediately it comes out differently, because it is on a different person with different habits. Imitation is the first stage of taste rather than a failure of it.

Let yourself copy openly for a while instead of apologizing for it. Notice which borrowed things you keep once the novelty wears off; those are yours now. Tell your cousin you took it from them, which costs nothing and usually makes them glad.