My advice is buy a package of tea lights. Fill the glass with some glass beads, sand, beans, lentils, whatever floats your boat, and gently press a tea light candle into it. Just make sure whatever you fill the glass with is not flammable. I would bypass the process of learning how to make a soy candle in a fluted glass altogether. If you want to learn to make soy candles take the time to learn properly in a glass container suitable for candles. I can see that you want to do something special for the wedding but it takes time to learn how to work with soy let alone make a proper candle. So maybe sometime when you have the time to learn about making soy candles we can help out with that.