In soccer, the goalkeeper position requires a variety of skills different from the field players. Keepers must have good hands, good footwork, defensive organizational skills, the ability to dive to save a low shot, and the ability to jump to parry a ball over the crossbar.
Often goalkeepers are not given the proper amount of training during your regular team training sessions. However, altering team training sessions to include the keeper will work wonders with improving your goalie. Since goalkeeping training needs are unique to the keeper, having a personal coach outside of practice is often desired.