Hi, I want to add petals and glitters to my candles, but I'm afraid that they can burn. I've seen them in a lot of candles but I'm not sure about adding them to mine. Can I add dry petals? Could they get burn and cause a disaster? I also have a lot of glitters and love how they shine, some are like dust and some are pretty bigger, but I'm afraid they could burn or spread bad plastic smell. Do you have experience with this? Is it safe to add that kind of elements?