Does your packaging open the loop?
Paste your title and thumbnail before you publish. Great packaging creates a question so urgent your viewer has no choice but to click.
How packaging scoring works
Open the loop. Title and thumbnail together should create a question the viewer can only answer by watching. Neither element should reveal the answer alone.
Divide the labor. Thumbnail carries the subject and emotional stakes. Title carries the social proof and the open question. Don't repeat the same information in both.
Don't close the loop. If the thumbnail shows the result of what the title promises, the viewer has no reason to click. Show the setup, not the payoff.