How can I tell if I am brushing and flossing properly?

For brushing, just brush your teeth gently and pay special attention to the areas where your teeth and gums meet. Clean the surface of every tooth by brushing with a circular motion and use the tip of the bristles to clean behind the upper and lower front teeth

For flossing, take a generous piece and wrap it around your middle fingers. Using a clean section of floss each time, wrap the floss around your tooth in a C shape. Then, wipe it over the tooth from base to tip. Repeat for every tooth.