You can already have William write in your brand voice and follow your content strategy. With visual brand guidelines, you take it a step further: every image, banner, or downloadable asset William generates will match your visual identity too. Set it up once, and you won't need to correct off-brand visuals again.
No design tools or code required. You describe your brand the way you'd explain it to a designer, paste it into your AI configuration, and William applies it every time it creates a visual asset.
🔔 Note: Visual brand guidelines apply to AI-generated assets (images, banners, downloadable content). They work alongside your existing brand voice settings, not instead of them. All outputs are editable before anything is published.
In this article
1. Define your visual brand style
If you already have a brand guideline document, skip to section 2 and paste it directly into your AI configuration.
If you don't have one yet, use William to generate a structured brand description from your website. Open a new conversation with William and run the following prompt:
Analyze this website and describe its visual brand style: [www.yourwebsite.com]
Fill in this structure including HEX values and clear properties:
Color system: Primary colors (with HEX), Secondary/accent colors (with HEX), Background and surface colors (with HEX), Text colors (primary, secondary, muted), Border colors
Layout and UI style: Border radius, Elevation, Spacing, Overall layout style
Typography: Font style, Font weights, Contrast level, Hierarchy
Buttons and interactive elements: Button styles (primary, secondary), Fill type, Corner style, Hover behavior, Text color on buttons
Output only the final structured result, ready for copy-paste.
💡 Tip: The more specific your brand description, the more consistent your visuals will be. Include HEX values for colors and precise terms for layout (e.g. "8px border radius, balanced spacing, minimal layout") rather than general words like "clean" or "modern".
2. Add your brand instructions to your AI configuration
Step 1. Go to your William AI Assistant configuration page.
Step 2. Scroll all the way down to the Custom Instructions section.
Step 3. Paste your brand guidelines into the field. Start with a clear header to scope the instructions, for example:
#When creating visuals and assets, always use these brand instructions:
Step 4. Click Save.
🔔 Note: These instructions apply globally. William will use them every time it generates a visual asset in your workspace, across all users and content types.
3. Start generating on-brand visuals
Once your guidelines are saved, William applies them automatically whenever you generate visual assets. You can review and edit every output before it goes anywhere.
Here are some high-impact ways to use it right away:
Social banners and post visuals
Create LinkedIn headers, campaign banners, carousel covers, event announcements, and quote cards. You can request multiple style directions in one prompt without drifting off-brand.
Try this prompt in William:
Generate 3 on-brand banners for a LinkedIn post announcing [your topic]. Include: headline, short supporting line, CTA text, and ensure aligned layout + colours based on our brand guidelines.
Newsletter and landing page visuals
Generate section dividers, hero banners, "new feature" blocks, and promo banners that match your layout. Keeps every edition consistent even when different people create the content.
CTA copy that fits the visual style
Generate button text and microcopy variants that align with your tone. Examples: Book a demo, Get in contact, Learn more.
💡 Tip: If an output isn't quite right, ask William to do a second pass. You can request more minimal, more playful, or better optimized for mobile without starting from scratch.
🎉 You're done, grab a coffee, you deserve it!
Check out the next steps below for more in-depth guides or follow-up actions.
📚 Next steps