Whitening teeth with hydrogen peroxide and baking soda?

okay so i mixed these things and brushed my teeth with it but some wee little parts of my gums are white, wtf! lol thanksss(:
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Step 1Use regular toothpaste to brush your teeth and rinse. Step 2Fill a cup with clean water. Step 3Get a small, disposable cup, a box of baking soda, hydrogen peroxide and a plastic spoon. Step 4Spoon out approximately 2 tsp. of baking soda into the disposable cup. Measure out about 1 tsp. of hydrogen peroxide and pour it into the cup. Mix the two ingredients thoroughly. Add more baking soda or hydrogen peroxide until you have a paste with the consistency of regular toothpaste. Step 5Add a drop or two of your favorite toothpaste into the cup for flavor. Mix all three ingredients. Step 6Wet your toothbrush. Step 7Dip the toothbrush into the paste. Get the paste on all sides of the toothbrush. Step 8Brush your teeth with the paste. Step 9Rinse your mouth well with the water from your pre-filled cup. Take small sips at a time and swish the water to remove all traces of the paste from your mouth. Step 10Repeat once a week.
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