Wrong. I could of won if I had of been willing to lie.
Right. I could have won if I had been willing to lie.
off of. Off is enough.
Wrong. She stepped backwards off of the car.
Right. She stepped backwards off the car.
only. Only is not a synonym for but or except.
Wrong. I would not be where I am today only for my wife.
Right. I would not be where I am today except for my wife.
out loud. The correct expression is aloud.
over with. Over is enough.