Penn State Associate Head Coach Salima Rockwell, a former setter (at Penn State and on the U.S. national team) who now works closely with setters as a coach, frequently sees these three bad habits from setters at the juniors level:
1) Hands up late before contacting the ball.
2) Jumping late when jump setting.
3) Back-pedaling to set balls passed behind them.
In this video, Salima has Penn State setters Wilma Rivera and Bryanna Weiskircher demonstrate how to fix these issues.