In-Short
The Style Is a Repeated Recipe
Good thumbnails come from reusing the same visual ingredients. For n-g.be that means one dominant phrase, one simple visual idea, high contrast, vibrant blue, cyan, and teal with warm yellow or orange accents, polished lighting, and no extra text, logos, or clutter.
Use One Prompt Skeleton Every Time
A strong base prompt:
Create a vibrant editorial thumbnail image for an n-g.be insight article. Use exactly one short dominant phrase: "[PHRASE]". Show one simple visual metaphor for [TOPIC]. The size of this image should be [680x380] pixels. Style: bold editorial tech illustration, premium modern UI feel, high contrast, vibrant blue / cyan / electric teal with warm yellow or orange accents, polished lighting, subtle gradients. Keep the text highly legible at thumbnail size. No extra paragraphs, no logos, no watermarks.Make the mobile version from the approved desktop image, not from scratch: same phrase, same colors, same story, in a wide 1200x400 banner. That keeps the pair consistent.
Iteration Is the Real Trick
The first version is usually close, not final. Ask AI to simplify the composition, enlarge the phrase, remove weak objects, or increase contrast until the idea reads at a glance. Prompt, review, give feedback, regenerate. The same loop is behind AI Skills Are Like Recipes.
Prompt Script
Copy / paste
Create a desktop thumbnail prompt for a new https://www.n-g.be insight article called 'YOUR TITLE'. Keep one dominant phrase, one simple visual metaphor, vibrant blue/cyan/teal with warm yellow or orange accents, and no extra text.