Thumbnail Generation Prompt for Sales Content (Brain/Tips/Note)

A structured system prompt designed to be used with Nano Banana Pro to generate high-quality, 'sellable' eye-catching thumbnails for online content platforms like Brain, Tips, and Note. The prompt defines the role as a professional graphic designer and provides a detailed design style guide, including layout, color scheme, typography, and required input fields for customization. Via YouMind OpenLab prompt library (MIT).