If there's one player to learn how to shield the soccer ball from it's Manchester United's Roy Keane. He rarely if ever lost the bal in the midfield when he played. And if he did, you better watch out. He had a tendancy to get a bit upset sometimes.
I don't think any of these kids would even think of trying to take the ball from Roy, but you get the idea of how important getting your body in front of the ball is in the video below.
Roy Kean's parting advice in general:
Desire and determination gets you to the top level. Everyone has talent but you have to have the desire to be the best.