Having a suite of consistent brand and marketing materials designed makes your business look more believable, trustworthy and like you have the expertise needed to fill your customers' needs. If your customers see these qualities in your brand, they will be more likely to trust you with their projects and to let you take care of their needs. Credibility also helps to eliminate customer worry — making for happier customers, even from the beginning of the relationship.
To make your brand credible, make sure your visuals are in alignment with your company's message and core values. Don't just show your customers what you think they want to see — make sure that you're visually telling the truth about your offerings and what you can do for your clients. And, back up your claims wherever possible with visual evidence — show people what you can do!