How does voice affect characterization? Voice and characterization have the same definition.
It is used to deliver all direct and indirect characterization.
It has no impact on the scope of characterization available.
It is what the characters in a text always use to speak to the readers.

It would be a lot easier if you did this yourself, imagine yourself as a reporter. reporters are very vigilant, wordy, smart people that don't take no for an answer, just simply put together a little story about yourself that would include places you've reported, things you've witnessed, people you've talked to and about to support your evidence, but it's all hypothetical so it's really easy to make it all up