Throttle Control:
The smoother you are on the throttle, the better balanced the car will be and ultimately the more traction and speed you will have. When you are moving your foot from the throttle to the brake pedal, or vice versa, it must be done as quickly as possible. Your right foot should always be either on the throttle (even if it’s a light, steady throttle) or on the brakes.
Don’t waste time doing nothing, with your foot in between the two.
Remember: YOU SHOULD NEVER BE COASTING!