This is a beautiful idea for an easy project for Autumn and Mabon. The instructions are here http://www.sparkandchemistry.com/craft-it-blog/leaf-mason-jar-candle-holder . The Tinker Lab has a tutorial on how to make glycerin leaves that will keep their color all year long http://tinkerlab.com/fall-crafts-glycerin-leaves/ .
Cute, easy idea. would look good on Thanksgiving table!