This is a very common form of coaching.  Professional athletes will review the game tape later and then identify what kinds of mistakes were made during the performance.  Musicians in an orchestra might listen to the performance after the fact and then identify some new techniques or practices that would improve their performance.  After the fact coaching is very popular and effective, but do not wait too long to do it!  There is something that some clients call an “after-action review.”  This is a great tool for coaching after a big project, presentation, or client event.  Pull your whole team together and do an after-action review.  In business, we so often are off to the next project and missing those learning opportunities.