No one has mentioned anything about actual steering technique yet. When I did an advanced driver training course (many years ago) one of the things we were taught was how to steer around tight bends. It's better demonstrated visually than in writing, but I'll try. Rather than reach one arm across the other, here's what you do
With both hands on each side of the wheel, turn until the one hand is approaching the bottom (i.e. approaching 90 degree turn of wheel). If you have to turn further, you bring your top hand down to meet it at the bottom of the wheel, then the other hand goes up. So let's say you have to do some crazy sharp turning, the motion is one of both hands moving up and down on their respective sides of the wheel never crossing over. At least that's how we were taught.
(I still drive a car without power steering BTW, so this probably affects me more than most people.)
But yeah
apart from that, just lots and lots of practice!