Northern Artistic Renaissance focused more on empirical observation and accurately paying attention to details of visual reality. The Italian Artistic Renaissance, however, accurately portrayed visual reality through proportion, perspective, and human anatomy.
Misappropriation of Likeness Basically you can’t use someone’s photo to earn money without consent, you’re exploiting without permission. On top of that usually people will request things like a percent of earnings based upon how often it’s used or an appropriate amount to essentially buy the rights for you to use their face on that advertisement.
You can avoid this by either blurring out the face (covering their face in some way) OR by asking for permission to use their face