Now would be a good time to reconnect with the editor that you worked with. Once the print run is done, your editor is gearing up for the next edition- be sure your name is on their mind!
Sending a quick note in snail mail might work, otherwise an email is just fine. Let them know that you saw the printed issue, and that you were happy with your article. Close by asking if there are other ways that you can serve them. Keep it simple and quick, and you're likely to get repeat assignments.
