Working on the fundamentals
Every goalkeeper regardless of their level is always working on their positioning and angles understanding where to be when is a critical part of goalkeeping.
Improve confidence
Using this guide will help you to improve your confidence as a goalkeeper you will start to understand your positioning on the field related to the ball position. No more getting lobbed from miles out or beaten at the near or far post because you are in the wrong place.
Increase your understanding of the position
As you improve your positional awareness as it relates to you competency you will be able to take greater risks as your ability to move across and forward / backward improves. This knowledge is a game changer for you as a goalkeeper and team mate.