there's a couple ways of doing this, the first is more of a tactical way of doing this where you trick the opposition, this can be achieved by leaning your body to one side as the ball comes towards you and instead going around the opposition on the other side this works because the opponent thinks you're going to go the way you previously leaned...
second you use muscle and out muscle your opposition and push them off the ball with your back and as your turn which lets you break the defence
and third sometimes the players let the ball go between their legs because it makes the opposition think they're going to touch the ball, and once the ball goes through your legs you immediately turn and make the break
hopefully this helps
