File this under good teaching and good karma alike. Max Kolomatsky is a filmmaker and graphic designer who lives in Brooklyn. As a creative he recognized that simple tweaks would improved the effectiveness of the hundreds of flyers that decorate his neighborhood.   

So he improves them, and he shows viewers on TikTok how he does it. He doesn't tell the poster he's doing it, nor does he remove the original flyer. He simply posts the new and improved version nearby. Then in short-form videos he demonstrates how he uses Photoshop to replace colors and fonts, to simplify and rearrange text, and to add simple graphic elements.

So far he's amassed over 3 million online views and the attention of Adobe, who has hired him to create several design process videos for their own social media platforms.

Article: The Brooklyn Artist Revitalizing New York, One Flyer At a Time