Hi I am no expert at this catogory, I sell paintings. But just so you have a little bit more of a head start.When I started on etsy I used to look at the store with the most sales and look at there title and tags. I think you may need to add more to your tags example: soy wax candles, candle, candles, soy, soy candle, cinnamon candle, candle set, autumn candles, soy tea lights, soy wax, scented candles, hand poured, soy handmade scented candle, soy jar candle, hand poured soy candles, scented soy candles. And also there are lots of candle makers out there, so having top of the line photos are great. And also have a budget set aside for renewing. when you renew your candles they will be on the front page until they get pushed towards the back pages. Most likely customers buy most items that are on the first 5 pages.
I hope this helps good luck.