Feedback is one of the main tools a coach has, but more is not always better. Motor learning research suggests that how often and how you give it matters.
General principles:
Constant feedback can improve performance in the session but may make athletes dependent on it, so learning holds up less well later
Reducing feedback over time, or giving it only when errors exceed a certain size, tends to support longer-term learning
Asking questions (“How did that feel? What would you change?”) helps athletes develop their own awareness
Specific, positive and short feedback usually works better with children than long technical explanations
A simple pattern for drills: show, let them try several times without comment, then give one key point, and let them try again. Repeat with fewer comments as they improve.
One clear focus at a time is usually more useful than correcting everything you see.