When you identify a piece of code that can be improved, put a tag corresponding to the associated practice in ‘negative’ mode on it. You can then modify this code to improve it. Right click again to indicate that the modification you have just made is the improvement of the tag you have previously put in negative mode.
The negative tag and its associated correction will be presented at the next Craft Workshop retrospective.
Thus, each developer will be able to present the improvements made to the code during the past week.