Athletics-Running

I have learnt that you have to put you fingers in the position of holding a feather.When someone says on your marks you have to step up to the line with your back heal off the ground and your back straight. I know when someone says get set you have to bend your back forward with your fingers in the position where your holding a feather and when someone claps you run as fast as you can. My goal is to run as fast as I can using the opposite arm to leg to make me even faster.