First, cut the bottle to size. You’ll want to utilize something to act as a straightedge to help you get a straight line.
Cut a piece of acetate sheet to 4” by 3” and roll it around the candle so that the 4” is the height.
Mix the concrete to a thick milkshake consistency and pour it into the water bottle.
Demold the candlestick holders by using a heat gun to release the plastic from the cement.
Start by putting some water into a cup and dab a little bit of paint onto a paint tray, or lid of a plastic food container.