"Make your invoices work harder: Your invoices hold a key to more sales. It’s called blank space. Use this space for small ads to promote other products and services that your current customers may not know you offer. This works great for fax cover sheets as well."
-Bellingham Business Journal
Can you find the blank space in your paper work.
What is a quote your company lives by?
What is an event your excited about?
What do you look forward to in your day?
You have the answers.
Fill the blank space you find with inspiration, insight, or encouragement. It always works best when your not prepared to find it there. This also shows how much thought you put into your products or services. All the way down to the invoice.