I've been told by someone that statistics shows those who get really good scores on their road test are more likely to soon get into accidents or traffic violations.
Hey, nine years ago I barely passed my road test with a score of 75 (fail was below 70) and have yet to have gotten pulled over or been in any traffic incidents.

When I was still a rookie, I had dozens of close calls and made several mistakes without getting caught, so luck was on my side as well. After several years on the road, I can say I'm pretty good at driving but I do have trust issues with other drivers on the road and sometimes lack confidence when I'm in unfamiliar territory. I also tend to not trust myself and have to double check my mirrors or take another look to my side when I change lanes.
Experience will teach you a lot and I think if you know someone who is really good at driving, has several years under their belt, does not blow up into panic outbursts when you make mistakes while driving, is patient and really good at instructing or giving advice without fear of insulting you, then you might have someone to help you start off.
One advice for freeway driving is to use the onramps to speedup and match the speed of traffic. Don't wait until you are on the freeway to speed up, anyone who will be behind you is going to have to slow down and they will get mad at you. Think of onramps like runways for aircraft, you have to open up the throttle so that you can quickly speedup for take off, then reduce throttle to maintain cruising speed. While doing this, you also have to watch traffic and find a gap where you can get your car into; you might have to slow down or speed up a little to compensate. When on the freeways, maintain a good 3 second distance behind the car you're following so you have enough time to brake and evade should something happen on the road.
With turning corners, you really just have to get a feel for the car's response when you turn the steering wheel and only turn enough to get through the corners. Too much or too little turning will force you into making sudden corrections. You should slow down before going into corners, but don't slow down to a turtle's pace.
There's too many variables for parking, but one thing I can tell you now is if you're in a parking lot, don't park so close to the car next to you that the occupants of the other car won't be able to get into their car because they can't open their doors. You'll also be in for a cosmetic surprise when you come back to your car.