I think you successfully gave this fireball character. maybe you didn't aim for it to look "Alive", to which I'd suggest editing the Right and Left side (Where the two fire bits on each side spit off of the actual projectile) to make it act less symmetrically. Basically, make the fire that comes off of the two sides fall off less in rhythm, and more randomly.
-Hope that makes sense :p
I do love it how it is though.