Usually you want to splash your ball and the sand out of a bunker, but when the ball is buried this will cause a skull, so in this situation you need to use your sand wedge to dig below the ball
What really differentiates players is their short game, and juniors should take a tip from the pros and spend at least half their practice time on the short game
There are several aspects that make the ball go higher, including clubhead speed, body rotation and backswing distance, all of which add height and consequently distance to your shots.