The choice of wick has a lot to do with fast/ slow burning candles. Search for a wick guide for Beeswax candles. also, the wicks should be 100% cotton and not wax coated.
Youtube video's are great. I also would recommend Beeswax Workshop: How to Make Your Own Natural Candles, Cosmetics, Cleaners, Soaps, Healing Balms and more authored by Christine Dalziel. So many options for Beeswax besides candles.