excellent work! Love the use of the negative space, makes it look like the tornado sucked in all the colour and whatnot. Colours look great though I think a bit of yellow at the top and bottom of the tornado like stucture would've made it all the better. But still , excellent work!
I'm sure you've seen the movie Twister - this reminds me of that elaborate wind chime thing outside that old lady's house (well, if you were to give it a psychedelic and bad-ass paint job ) you could imagine this would spin when the wind picks up