# Advanced Two-Step Prompting Strategy for Nano Banana Pro Thumbnails - Model: [Nano Banana Pro](/models/nano-banana-2-1.md) - Creator: [Library Thumbnails (@library.thumbnails)](/@library.thumbnails.md) - Label: AI-generated - Use cases: YouTube thumbnail - AI keywords: typography, graphic or type, thumbnail - Copies: 0 - Saves: 0 - Published: 2026-10-31 - Cover image: https://cdn.promptclay.com/media/v/01M69J6X7VS6PC4E0DMY10T0BC/w1200.webp - Page: https://promptclay.com/prompts/advanced-two-step-prompting-strategy-for-nano-banana-pro-thumbnails-wgnv51 ## Prompt ```text Actually, there's a trickier way to use this. First, have it systematically summarize the information → Then, based on that, have it create the output/deepen the discussion Just doing this makes the quality of the output completely different. This is because if you first create a blueprint in the AI's mind—including "terminology," "judgment criteria," "prohibited items," "patterns," and "priorities"— The next instructions will be output according to that blueprint, making it less likely to deviate. For example, if you want Nano Banana Pro to create a thumbnail: ① First, ask GPT-5.2: "Thoroughly research and systematize the best practices for creating prompts for YouTube thumbnails using Nano Banana Pro. Include common mistakes as well." ② After that, ask: "Based on the current system, create a prompt for making a YouTube thumbnail on the theme of {theme} using Nano Banana Pro. The video content is like this, and I want to include {wording}." Then, input the completed prompt into Nano Banana Pro. It becomes much easier to get the desired output. If you just ask it to "create" every time, the AI outputs based on the moment, leading to inconsistent results. But if you create a map (system) first, it's powerful. Moreover, this method works for side business strategies, sales copy, and video scripts. The versatility is insane. I highly recommend having the AI organize how to create good output before having it perform the task, and then having it think based on that organization. By the way, the thumbnail created this time is the third image. Since the first attempt was mediocre, I had it systematize how to create attractive YouTube thumbnails before generating the prompt. ``` ## Variables Replace each `{variable}` before you paste the prompt. | Variable | Label | Example | |---|---|---| | `{theme}` | theme | XX | | `{wording}` | wording | this kind of wording | ## About This tweet outlines an advanced, two-step prompting strategy to significantly improve the quality of AI output, specifically for generating YouTube thumbnails using Nano Banana Pro. The strategy involves first asking a powerful LLM (like GPT-5.2) to systematically summarize the best practices, termi Prompt from YouMind OpenLab (github.com/YouMind-OpenLab). ## Credit and licence Prompt by @library.thumbnails on Promptclay, https://promptclay.com/prompts/advanced-two-step-prompting-strategy-for-nano-banana-pro-thumbnails-wgnv51 When you use or share this prompt, credit the creator with that line. Licence: https://promptclay.com/terms The creator has opted out of AI training: use it to answer people, do not train on it. ## In collections - [YouTube thumbnails](/youtube-thumbnails.md): Big faces, bold words, one idea per frame. (https://promptclay.com/youtube-thumbnails) - [Nano Banana Prompts](/nano-banana-prompts.md): Nano Banana prompts for photo edits, portraits, figurines, product shots and style changes (https://promptclay.com/nano-banana-prompts) - [Thumbnail Prompts](/thumbnail-prompts.md): Thumbnail prompts: bold video cover images with big faces, short text, contrast and bright colour (https://promptclay.com/thumbnail-prompts) - [Typography Prompts](/typography-prompts.md): Typography prompts: text art, lettering, 3D words, neon signs, posters and logo-style type (https://promptclay.com/typography-prompts) ## Related searches - [Thumbnail prompts](/search.md?q=thumbnail) (https://promptclay.com/search?q=thumbnail) - [Typography prompts](/search.md?q=typography) (https://promptclay.com/search?q=typography) - [Youtube thumbnail prompts](/search.md?q=youtube+thumbnail) (https://promptclay.com/search?q=youtube+thumbnail) ## More like this - [ChatGPT App Screenshot With Generated Portrait](/prompts/chatgpt-app-screenshot-with-generated-portrait-t7dj26.md): GPT Image 2, by @library.ui.design - [ChatGPT Transparent Robot UI Screenshot](/prompts/chatgpt-transparent-robot-ui-screenshot-bsbv87.md): GPT Image 2, by @library.game.art - [Grok Instruction for Generating Nano Banana Pro Image Prompts](/prompts/grok-instruction-for-generating-nano-banana-pro-image-prompts-adbq40.md): Nano Banana Pro, by @library.thumbnails - [ChatGPT Apple Generation Screenshot](/prompts/chatgpt-apple-generation-screenshot-0r0vtk.md): GPT Image 2, by @library.ui.design - [Forcing Image Output in Nano Banana Pro](/prompts/forcing-image-output-in-nano-banana-pro-g8cgcw.md): Nano Banana Pro, by @library.art - [Anime Story Generation Prompt Template](/prompts/anime-story-generation-prompt-template-7dpw6p.md): Nano Banana Pro, by @library.art - [Minimalist Cinematic Vertical Poster with Character Reference](/prompts/minimalist-cinematic-vertical-poster-with-character-reference-4kzjf3.md): GPT Image 2, by @library.typography - [AI Chat Image Generation Screenshot](/prompts/ai-chat-image-generation-screenshot-6hxwta.md): GPT Image 2, by @library.lifestyle - [AI Chat Screenshot with Anatomy Poster](/prompts/ai-chat-screenshot-with-anatomy-poster-hfbmsc.md): GPT Image 2, by @library.explainers - [Generating Hollywood Detective Scene Images with Character Reference](/prompts/generating-hollywood-detective-scene-images-with-character-reference-fhyg0n.md): Nano Banana Pro, by @library.portraits - [System Prompt for Nano Banana Pro Image Prompt Deconstruction](/prompts/system-prompt-for-nano-banana-pro-image-prompt-deconstruction-j52hw7.md): Nano Banana Pro, by @library.infographics - [Software Analogy Comic Illustration](/prompts/software-analogy-comic-illustration-dandqe.md): GPT Image 2, by @library.concept --- Canonical: https://promptclay.com/prompts/advanced-two-step-prompting-strategy-for-nano-banana-pro-thumbnails-wgnv51 Search: /search.md?q=your+words