First times matter
As with all candles, the first burn is the most important. To prevent uneven wax, always burn your candle long enough for the wax to melt and pool to the edges of the glass. The rule is generally one hour for every inch in diameter.
Before lighting always trim the wick to 5mm to ensure your candle stays as pristine and elegant as the day you bought it.
To extinguish candles without smoke use a dipper tool and dip candle wick into molten wax, lift & center.