The most common mistake people make with a brand style guide is treating it as a visual-only document for logos, colors, and fonts. It's an easy trap to fall into because visual assets are tangible. Defining a hex code feels more concrete than defining a personality. But this approach starves your brand of its soul, leading to wildly inconsistent messaging. One ad might be playful and meme-heavy while your website copy is clinical and stuffy, which, as Ryan Kanaly noted on Honest Ecommerce, erodes customer trust. A better way comes from Nate Lagos, who argued on eCommerce Evolution that a real brand playbook understands how your brand shows up in a customer's life and feelings. The fix is to dedicate half of your guide to Brand Identity and voice. Define your personality, and as Jess Berman suggested on Honest Ecommerce, build a copy bank with examples and a list of words you do and don't use.
The second major error is making the guide a rigid book of commandments. This often comes from a founder’s fear of their "baby" being misinterpreted by agencies or new hires. The result is a document that's so restrictive it kills the creative spark needed for effective, direct-response advertising. Your team ends up making bland, "safe" creative that doesn't convert. Blake Pinsker, who helped build MVMT, pointed out on 2X eCommerce Podcast that the goal for an agency is to work within the brand's guidelines, not be put in a creative straitjacket. He wants the guide to help him "see the brand through your lens." The small change that fixes this is to build a flexible framework. Instead of just one approved photo style, show a spectrum. Provide principles, not just rules. This empowers your team to be creative while still being consistent.
The final mistake is treating your brand guide as a static file that you create once and never touch again. Brands that do this end up with obsolete guidelines that don’t reflect their current market position, customer base, or channel strategy. They’re steering with an old map. You need a living document. In a discussion about defining brand identity before launching new channels, Jess Berman from BodyBio explained on Honest Ecommerce that while her intuition is key, she creates these assets so her team can act in the same way she would. The solution is to put a recurring six-month review on your calendar. Use it to update examples, refine your voice, and ensure the guide is a tool that helps you move forward, not one that keeps you stuck in the past.
A great brand guide is a compass, not a cage; it empowers your whole team to creatively and consistently tell your brand’s story.
