He says to get down on your knees when passing back and forth
to your child so as to be on "their" level.
The ball will come at them from a similar level as their team mates
rather than from way above.
My son was a bit shy of the ball when it came toward his face, but since we have been practicing on his level, it has helped tremendously! This is the most simple tip EVER, but thought I'd share just in case there are other parents out there who find this helpful- like I did!