Ok...another question :-D....I don't know if its possible or not...can you import an image into apophysis to have on the background of the flame instead of black or a plain color???
A longer response, one worthy of your highness, ... ;o) .. is that, if you render as a TRANSPARENT backed PNG .. then it mkes layering it "easier" ...
but ..
keep in mind, that if you use a black background .. that BLACK is contributing to how you see the flame .. it is adding thickness and depth .. if you strip it away your flame will, more often than not, appear paper-thin and lifeless
I stripped the black out of Sign In Stranger using a FREE plug-in from Mehdi-PluginsEraser Genuine .. but the flame no longer looks like it did when I started .. I had to augment heavily to give back substance