I couldn't tell what worked when I used a thumbnail with too much text as a reference

For the corporate channel I'm involved with, I have them submit three thumbnail drafts: Draft A, Draft B, and Draft C. I ...

Are you packing too much text into your note header images? What I, as a VTuber, am careful about with thumbnails | SNS Monetization Experiment Day 37

Today, I was reading an article written about thumbnails.In note, these are called "header images," or what we generally call ...