To create a catchy CTA for your sticker marketing campaign, it's important to keep it clear and concise. A well-thought-out CTA encourages potential customers to respond to your campaign. Consider using customised bumper stickers, which can be placed on company vehicles, to make your CTA more impactful. Not only will potential customers see it, but you can also showcase your design skills to business partners. The key is to create a CTA that leaves a lasting impression on people who see your stickers.