with dribbling the ball you need to time it and with dribbling you need speed. with dribbling you start running then when your about a meter in front of the payer you do the trick. then once you have past them then you accelerate and speed away from the defender.say you right outside the eighteen yard box and there are a lot of defenders in front of you then you have to keep the ball close to you and do the tricks around them but keep the ball close to you. same thing once you past them accelerate or if your in front of the net then you shoot.

http://millcreeksoccerclub.org/wp-content/uploads/2013/03/Soccer-Activities-Drills.pdf