Easy once you follow my Method.
I made a Video here on how to do it. Shouldn't take more than 5 tries :).
If you're having trouble flicking it in the air, I can write a tutorial on it.
To pull it off, run past all of the defenders and turn with the Left Stick.
Hold the LT Throughout the next few steps
Start tapping RB to do Kickups
Once Kicking the ball, Hold the Left stick the direction that you're player is facing.
the ball should now be kicked into the air.
Still holding the Left Trigger, Tap B. You're Player, after a few attempts, should try a Bicycle Kick.
Try playing as a good team to do this. I Recommend Brazil, this is the team I found easiest.
Hopefully this helps you! :D