First light the candles.

Then spread your hands out around the candles drawing your hands inward in a circular motion three times to indicate the acceptance of the sanctity of Shabbat.

You then cover your eyes and recite the following blessing:

Transliteration:
Boruch A-toh Ado-noi E-lo-hei-nu Me-lech Ho-olom A-sher Ki-de-sha-nu Be-mitz-vo-sov Vi-tzi-vo-nu Le-had-lik Ner Shel Sha-bos Ko-desh

Translation:
Blessed are You, Lord our G-d, King of the universe, who has sanctified us with His commandments, and commanded us to kindle the light of the holy Shabbat.

Uncover your eyes and behold the Shabbat lights.

The time of lighting is considered especially propitious for praying to G-d for health and happiness. The prayer is readily acceptable because it is offered during the performance of this great mitzvah of lighting Shabbat candles.

Make sure to light the candles before sunset.