Add wax to the top of the mason jars. Press the wax down firmly to fit as much wax in as possible.
Place the jars into the crockpot, secure the lid and set heat to high.
As the wax melts, add more of the soy shavings to keep the wax level ¼-½" from the top.
Once the wax is completely melted, carefully remove the mason jars from the crockpot with a hot pad.
Let them cool slightly, then add 20 drops of each essential oil to each candle.
Center the wicks in the jars and hold them in place using tape, bamboo skewers, or a metal wick holder.
Once the wax is completely hardened, 24-48 hours, remove the tape and trim wick to ½".
Notes
For step-by-step images, see the post above.
To use tape to hold up the wick, run a piece of tape across the top of the jar. Punch a hole in the center, then feed the wick through the hole till it bottoms out on the bottom of the jar.
Don't trim your wick shorter than 1/2 inch; this can cause the candle to burn down in a tunnel shape.
To clean any utensils used in candle making, wipe them with a paper towel to catch the wax before rinsing. This prevents clogged drains and keeps your supplies clean for next time!