Hold the stiff arm button while carrying the ball
Use the right stick to push away the defender if your control settings require it
On PlayStation, use the assigned stiff arm input shown in your controls menu
On Xbox, use the assigned stiff arm input shown in your controls menu
Check your controller settings in case the stiff arm input is different from default
Use stiff arm when a defender is closing in from the side or front
Time it as the defender reaches tackle range