You can either set up to a bunker shot square to the target for a lower trajectory and more roll or open to the target line with your clubface at the target for a higher trajectory and softer landing
Too many players worry about mechanical and technical things throughout their swing and never focus on balance which is the key to a stable shot, see if you are in balance by trying to hold your finish position until your ball lands
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