There is probley only 2 more thing you can do, Just slow the car down, and work on your lines and braking markers, and also too enter in as may events as you can, the more events you race, the more you will learn as different things happen an you learn by your mistakes, for some people it just comes naturaly but for others they just need to practice.

For me, the past year ive slowed things down a touch an just worked on my lines and the way i set the car up, and iam only just now starting to put more power down to the ground, an since ive slowed things down iam doing pretty well, and now iam starting to make A finals and actually finish races, like atm iam 8th in NSW for 1/8th on-road an at the states i learnt so much, but yer the more you race and practice the better you will become