This was such an easy DIY and as sad as it may be I got pretty excited seeing my drawing light up. Everything I used was stuff I already had in the house, I used grease proof paper, a glass tumbler, scissors, tape and a pen.
Wrap a piece of grease proof paper around the glass and cut so you have roughly the right size but leave some extra. Draw on your design and then wrap back around. Use tape on the inside of the paper the secure and cut the excess. Make sure there isn't any paper sticking up over the top as its a little bit of fire hazard.
Light the candle and be amazed at your crafty awesomeness :)