Use pansies and plant them weeks ahead of the wedding. Add the candle last minute for a great centerpiece. If the plants are growing, you just have to keep them watered to have them look great on the wedding day.
DIY candles - normal candles, cheap string of costume pearls, laser cut paper flower stencil and ribbon- I am such a DIY fan. Over these uni holidays I am going to splurge and do some much, instead of studying