First look, all i could say is way to many cards, try to limit it, when u play, wich cards do u feel are the most useless ones?
And i would drop the fire eaters, lava golems, plague and add Rain of Firex2, keep the destroyer in for now tho
also i'd remove 2xparasites the supernova and a PU or two.. but its ur deck, so u can try it out, and see what feels best.
Could always play around in trainer =)