Littha, Dragonmech definetely has some rules that go along with what you're already using. If you get a copy of the books, flip to the Steam Powers. You start with something, say a steam power to generate flame. Then you add the Amplifier steam power to increase the damage and the Billows steam power to make the flame affect a cone, and voila.
I 100% want to play a Dragonmech class.