I'm a lurker on r/graphic_design. Earlier today, user V_Doan posted this ad they had come across, pointing out the various terrible renderings within the AI-generated image. The original is above, and below I've circled the worst offenders. See how many you can spot before you look. Also, the faces of the people are a great example of blanding, in my opinion - something I definitely have thoughts about (in a future post).