This foundation brush makes applying your favorite foundation a snap. Put a dollop of foundation on the back of your hand and take up a small amount from your hand to your brush. 
Then apply onto your skin with downward strokes in a feather like fashion for an airbrushed look. Make sure you are blending and evening out any brush strokes. 
Apply the smallest amount of makeup to the center of the face applying only where needed for a natural look. 
You may also apply your moisturizer and primer with brush before your foundation application.