One of the most overrated coaching points I hear from sidelines is "get your head up" when a player is dribbling with the ball. While of course, we need to be aware of our surroundings while on the ball, a players eyes are never off the ball except for maybe a split second. I see so many drills where a player is doing toe taps with their heads straight up and making eye contact with the ball. I think this is an improper way of teaching vision. Coaches need to train peripheral vision instead of "getting their heads up." A prime example of this, is when you see a player score without ever looking at the goalkeeper.. Messi is especially special at this. If he scores with 3 touches, the odds are high that he looks in-between the first and second touch, or before he even got the ball.