For years, when I finished up a project with a client, I didn't think anything of washing my hands of it and walking away. However, I learned in the latter parts of my freelance career how important following up is. We often overlook this step—it's easy to. When our service is done, we don't see a need to keep poking at a client. The truth is, there's actually a lot of value that can be extracted when the project is done that can help us down the road.