Just recently I learned about Shuhari
It is known that, when we learn or train in something, we pass through the stages of shu, ha, and ri. These stages are explained as follows. In shu, we repeat the forms and discipline ourselves so that our bodies absorb the forms that our forebears created. We remain faithful to these forms with no deviation. Next, in the stage of ha, once we have disciplined ourselves to acquire the forms and movements, we make innovations. In this process the forms may be broken and discarded. Finally, in ri, we completely depart from the forms, open the door to creative technique, and arrive in a place where we act in accordance with what our heart/mind desires, unhindered while not overstepping laws. - Endō Seishirō
Or you can take cooking as an example. You learn to cook, follow the steps from a recipe exactly until the end, this is the shu stage. If you use this recipe and change some ingredients by yourself e.g. instead of one banana, you take two bananas, you are in the ha stage. In the ri stage you don’t look at recipes anymore, you just cook in your own style.