Good things take time, so don't rush in and simply light up your candle... follow these easy steps and your candle will perform at its very best...
To prevent 'tunneling', burn your candle until the entire top of the wax is liquid - this is vital for the first burn, if you burn only a small burn pool (of melted wax), the wax will remember this 'edge' and only burn to this line every time - this will result in pretty much no fragrance throw.
Do not burn your candle for more than 4 hours at one time (large size) - any more than this and it is wasting the wax - in a good quality candle, the fragrance should still linger in the air after it has been extinguished.
Always trim the wick to 6mm before relighting to ensure the wick/flame is working correctly. Wicks that are too long, or have the 'mushroom-head' carbon build up, will soot and put excess black smoke on your beautiful vessel.
Do wipe the vessel clean if some black smoke builds up.
Most importantly - burn your gorgeous candle! Do not save it like precious china hidden away in a cupboard. It was created for you to use and enjoy.