What is needed to make a flame burn brighter?

To make a flame burn brighter, you can increase the oxygen supply, as flames require oxygen to combust more efficiently. This can be achieved by using a fan or ensuring better airflow around the flame. Additionally, using fuels with higher energy content or adjusting the fuel-to-air ratio can enhance the brightness of the flame. Lastly, ensuring that the fuel is in a more vaporized form can also contribute to a brighter burn.