Many people around the world think it's extremely unlucky to look at their reflection in a mirror by candlelight on Halloween night (although oddly enough, there's an old witch's ritual of making a wish by candlelight while gazing into a mirror on Halloween night). It was believed that gazing into a mirror lit only by candle(s) -especially a red or black candle- would summon the devil.
A burning candle placed within a carved pumpkin keeps evil spirits and demons away, especially on Samhain night when they are most active walking the earth. This is the basis of the tradition of lighting jack o' lanterns, which began in Ireland with the carving of gourds which were then used as lanterns to not only light a traveler's way, but to keep them safe from the things that go bump in the night.
For good luck burn black and orange candles on Halloween as these are the traditional colors of this sabbat and their color vibrations are at their highest on this day. Always burn new candles on Samhain for this will bring you good luck. And never burn your Samhain candles at any other time of the year as this will bring you bad luck.
If a candle should go out by itself on Halloween, by either wind, breath or an unknown force, it’s believed to be a sign that a ghostly spirit has arrived, so look lively!
Scrying into a candle flame on Halloween night is a good way to divine the future and to receive clairvoyant visions and messages. Or burn a white candle on Halloween, pour the melted wax from it into a cauldron full of cold water and divine the future by reading the patterns formed by the hardened wax floating in the water. There doesn't seem to be any literature on how to read this candle wax, unlike say, tea leaves, so it's up to you to divine the signs!
Burn a new orange candle at the Witching Hour of Midnight on Halloween and let it burn till the sun rises on the morning of November 1st and you will have very good luck, but be sure to burn it safely in a sink or bathtub if you aren't planning to stay up until the sun rises.
Photo courtesy of Me the Wanderer on flickr.