Fire

What you need to make this image:

• sheet of glass 
• dark background 
• lighter fluid
• dark location
• tripod

Mount your camera on the tripod, position the glass horizontally and place dark background behind it. Picture needs to be underexposed so set exposure compensation to -1 (or whatever works best). Now all you need to do is to spray some lighter fluid on the glass and set it on fire and shoot away.