Thumbnail Review

Why It Doesn't Work

• The vertical video format creates large, wasted black bars on the sides.
• The central image is too small and lacks impact on mobile screens.
• The tiny yellow text 'during the' is unreadable and adds no value.
• The character's expression is too subtle to convey the 'secret' or shock.
• The overall composition is cluttered with too many small, indistinct desk objects.
• The thumbnail fails to visually represent the 'credit card contract' or 'page 14' mentioned in the title.