Don’t be shy, try everything you can think of
The 8Seconds Optimizer does not increase the CTR of existing images, it chooses the best combination (highest CTR) from your ideas. You can try everything, even if you think it won’t work.
Many customers had big surprises. If you are only using what you expect may work you’ll get about the same results as you always had, maybe with small improvements. Trying radically different images is what pays off.