...not that it is something you have to do, but just in case you're keen on doing it: find yourself a glue gun!!!
You don't really need the big, super-powerful and expensive ones. I bought mine for less than 8 Euros + 12 recharges for less than 10 Euros !
What I really like of my glue gun is that it is very small, easy to handle and doesn't heat as much as the big ones. Glue recharges are still fully melted, but they do not reach a crazy temperature avoiding you serious burnings.
What can you use to decorate the container? Ribbons, crafting paper, felt flowers and so on!
For the Wild orchid candle I've used a black satin ribbon, on which I've glued iron-on white stones and a pink felt-made flower.
While for the Arlequin candle I've used colourful miniaturized safety pins that I've glued everywhere on the container's surface