When coaching baseball, as you prepare and conduct practice, one of the most important things to keep in mind is that your players self image, confidence, and trust in himself is tremendously more important than the exact technique he uses to get the job done. So when doing drills like this from the iBook, Practice baseball to Win, please make them feel good about themselves and the situation they are in. The game and needs to be fun. So start slowly and proceed as the confidence builds.
Drill from the iBook, Practice Baseball to Win, Multiple ground balls