Tap glow worm in the area of light to pass on the flame. Try to make the flame travel as far as possible.
Sometimes evil flame appears and burns glow-worms, making them unfit to light by the cool flame.
You need to quickly fireflies in the aperture range, click on the other fireflies, and then transfer the light source, of course, on the way there will be little rascal to mischief, reasonable to avoid them, and then get a higher score!
Have Fun!