It reflects your power — v immense power behind your work. The flame is fueled by raw emotion + perhaps that heightened your power. Such high energy becomes unpredictable + can affect the outcome. Tall flame is spirit or your guides affirming you can accomplish ANYTHING you set your intentions to. Burning v bright to show they are there, heard you + they gotchu. Yellow speaks of spiritual nuances + black smoke shows an opposing force, but the flame is high so you surrounded by supportive energy.