Should I remove the crystals before I burn the candle?
The short answer is yes. The wax pool should be free of debris before burning - don't worry, the energy from the crystal has been soaked up by the wax <3 Wash crystals in warm water and towel dry
How do I get the most efficient burn and increase the lifespan of my candle?
The trick here is making sure your wick is always trimmed to 1/4". You can do this by removing the charred wood with wick trimmers or pinching off with your fingers. Also - make sure the wax pool melts to the edge every time usually 2-4 hour burn time each use.
General Safety Tips:
Do not burn for more than 4 hours. Do not leave burning candle unattended. Keep out of the reach of children. Keep away from flammable items. Keep wax pool free of debris.