It's always difficult do judge someone elses driving without actually being in the car so I would suggest you invest in some proper training. Someone like Anthony Dunn, Ben Cluclas or the likes will help you massively. It's not cheap but well worth every penny. As a quick observation, you should not be moving your hands around on the wheel whilst cornering. As soon as you let go with one hand you reduce the amount of control and connection you have with the car. Caterhams have a relatively small steering lock too so there should be no need. In the words of someone much more talented than me, "do less".