I use the the step-over alot while sprinting down the wings, you can get past the fullbacks easily if you time it so as they are about to lunge in you get the large touch away
the spin is very usefull, i find best way to do it is on an angle and spin away from the defender when he lunges in and if you have a quality player most times you'll get past or draw the foul
i LOVE the shot-fake one of the best moves, even on 5 Star keepers fall for it every time 1 on 1, and u can just run past them into the goal - i probably use it too much though against the defenders cause if they don't fall for it you get tackled, but its priceless when it works
finally the one i use the most is holding R2 you press left then right or right then left quickly, and you do a sort of fake step one way and step the other way - fools defenders nearly everytime and with a quick player - you're easily away.