Simply go out into the light of the moon (a full one is most appropriate, I think!), light some incense and a candle, sing, and pray.
Welcome to you,
Jewel of the night!
Beauty of the heavens,
Jewel of the night!
Mother of the stars,
Jewel of the night!
Fosterling of the sun,
Jewel of the night!
Majesty of the stars,
Jewel of the night!
Jewel of the night!
Jewel of the night!