ANSWER - Ummm... I've read this through a few times and I'm not entirely sure what it is that you are asking. Your lit candle burned down... I'm unclear why you find that out of the ordinary? A little wax after a candle has burned out is perfectly normal and likely has no significance in regard to the spell you are performing.
Tell you what - send me a bit more information and explain what exactly your concern is and I'll have another look and update your answer more fully.
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