This link was forwarded to me by one of our coaches, Mike Taylor. It shows some good technical breakdowns of different skills on the site; this one is how to execute the scissors move. The full site address is http://sportskool.com/sports/soccer.
Notice how Mia dribbles in the opening clip, and how she dribbles when she attacks space to execute the move. She has her toe down and pushes it ahead of her out front, at the top of her stride. The ball doesn't get underneath her hips when she attacks space. This is "running with the ball". All of our youth players should be proficient in this technique.
MF