The idea is to have the perfect measurement between the holes… so.. i’d mark a level line on the wall. then use the tape to measure the distance between the holes. .. transfer tape to wall at the line and then you’ll know right where to put the holes.
How to clean out candle jars for reuse: If you get the wax out before the water has completely cooled, do not pour the hot water down the drain. let the water cool overnight, and the next morning, the wax floated to the top and hardened.