Use cup, bowl or incense burner deep enough to fill with earth or sand. Light charcoal on bottom edge until coal begins to ignite, sit charcoal on earth or sand within burner. Let sit for a brief period; until the coal has started to glow, then place resins or powder on charcoal. These coals will burn for an hour or so. Continue to place incense powder on charcoal as they burn out and smoke decreases for a continuous burning. Once charcoal is lit, it should burn out thoroughly for the full period of time; it should not be extinguished and re-lit at another time.