Lemon, mountain laurel, and rhododendron leaves work well for this project.
Melt 4 to 6 ounces of beeswax in a double boiler. If you'd like, tint the wax: Add 1/4-inch pieces of crayon until you achieve desired shade. Note ratios so you can make more if needed. With a sponge brush, spread a few thin layers of wax on the back of a leaf. Press coated side of the leaf firmly onto a pillar candle. Working quickly but carefully, peel back the leaf, leaving a wax impression.