High performance is rarely achieved overnight, but typically as a result of continuous development. Making the improvements so small, that they feel easy to accomplish is both motivating and impactful. There are various ways to embed continuous improvement into the projects one delivers.
To make sure your team keeps continuously improving, it is useful to keep measuring the actions taken as well as results, and to enhance your processes with opportunities to discuss possible improvements.
How could you make your development more measurable and therefore trackable to youself?
Does your team has a convenient time and place for suggesting improvements?