How about a big shout out to all of those managers on basketball teams that shag rebounds in practice to feed the ball to shooters in practice! Rhythm, rhythm, rhythm, feel that rhythm.
In practice, and those three point shooting contests, your feet are squared, your knees and especially your hips are squared. This helps the shoulders be squared and the body be squared.
Corner shots are typically passes to a set and squared shooter as compared to other spaces beyond the arc. 90 degrees of the court is out of bounds in the corner so that limits so many options of play. Dribble penetration can see the set and squared shooter in the corner most easily for a dish to the three. The space is slim in the corner for the three point shooter so be set and squared or pass if the ball does not arrive clean in your window for a rhythm shot. Ask Ray Allen what a rhythm shot in the corner feels like. How often does a pass go to a shooter in the corner at an angle more than 45 degrees? How often does the the shooter dribble laterally in the corner then shoot an unbalanced shot?