Both Foot Fake is done like this:
Your player is running towards the right. An opponent gets in front of him.
From pressing Right, quickly go Up then Right or Down the Right depending on which side you want to beat him on. Your player will poke the ball around the opponent and ahead of you to run onto.
This can be done using R1, R2 or normal dribble with changing difficulties between the different types. Try using all the buttons to see which is which.
At a quick guess, I would it is easiest to do without either 'R' dribble, then R1 and hardest is R1 but I'm not certain on this.
Having the BFF skill star does make it easier to do the skill but other players can do it too if you use the correct technique.
Shoot followed by X is a shot fake.
This can be done in the middle of the pitch by using O instead of shoot as well.