Well its all about taking it with the right person, go into training and start using Juninho of Lyon.
Then place the ball just under 30 yards from goal, the trick is to hit the power bar around half way, this way it should (most of the time) beat a jumping wall, and if you press left on the D-pad the ball should swerve in that direction, giving the keeper an even harder time dealing with the shot.
Thats the best I can do, if you want something more specific just say.