Simply load up a KICK OFF game against a second controller (or a friend online willing to help. Dribble the ball so that you are outside the 18 yard box and have the second controller foul you (I found it easiest to slide tackle them from behind). With the second controller move the keeper with
and hold them as far away from the corner you will aim at as possible. Then with the main controller move the reticle on the ball until you see the ball's trajectory going to the side opposite of the keeper. Try to give yourself a clean shot without any defenders in the way. I did a simple power shot with no curl and aimed at no defenders.
I created this video to help:
Hope this helps.