First person. The only exception is if they are talking about someone else. Or whiting about someone else
Answer:
An adjective has to come before the noun it is describing; if that is not the case, then it is misplaced.
For example, the sentence: I walked down the street.
I can say, "I walked down the dark street."
But if the word dark was anywhere else, it would be a misplaced adjective.
