The next task is to create the big ball of flames itself through the use of Kixum's Explosion Tutorial . I wanted to make a nice gradiated fire effect so in the Shader Editior I placed Mix operators using two color channels and one Celluar function in both mixing channels above and the Elevation functions in the one below (refer to the image above in case this sounds too complicated) . I done this for both the color channel and glow channel - since I'm using the Aura filter I have to make the colors darker in the glow channel else they'll be far too bright using the filter. Highlight and Shininess values are set to zero.