Candle magic, methods and safety.
Carving symbols to a candle is done to add properties, intentions, and representations. This can be done with different tools. I personally use a rose quartz tower about three inches in height. Toothpicks can be used for a softer wax such as paraffin, and harder tools such as needles, awls, stone towers, etc are better for beeswax, a much tougher wax to work than paraffin.
Petitions under a lot candle are also great for candle workings. These can get specific, act as taglocks, and include sigils and other symbols.
Taglocks are personal items used to connect individuals to a working. I particularly enjoy using these with protection workings. To protect a family member I may use a button that came off their clothing or other personal items. As well taglocks can be used for many intentions. Buttons are placed atop a candle preferably as far from the wick and flame as possible. Be certain items used are not incredibly flammable and are placed properly and safely. Use caution. Smaller items are great.
When using candles magically never leave them unattended. Always use an appropriate holder for the candle type you are using. Avoid using plastic near your candle. Do not use plastic under your candle. Use a holder for the type of candle you are working with.