Start with plain taper or pillar candles that have a smooth, clean surface. Wipe each one gently with a lint-free cloth to remove any dust or residue so the wax will stick better. Light or white candles show color best and make the designs stand out beautifully.
Break or shave small pieces of colored candles and melt them in a heatproof dish using a candle warmer or by holding a spoon over a lit candle. You only need a small amount of melted wax for each color, and keeping it slightly warm helps you work faster.
Dip a small brush, spoon, or wooden stick into the melted wax and start painting on your plain candle. Work quickly since the wax hardens fast. You can create hearts, stripes, dots, or any simple pattern you like. If the wax cools too much, reheat it gently and keep going.
If you make a mistake, wait for the wax to cool, then scrape it off carefully and repaint that area. Once your first color has set, you can layer other shades on top to add depth or blend them while still warm for a soft, marbled effect.
Let your candle cool completely so the new wax hardens in place. Handle it gently until the design feels firm and smooth. Once it is ready, display your candle on a table, mantle, or console, or bundle a few together with ribbon for a handmade gift.