This is fantastic, (it's so awesome when mixed media artists list what they use, I wouldn't have guessed half the stuff) really cool composition. ^//^ Keep up the good work!
Wow, you really have a knack for painting beautiful abstract art. Heading over to your gallery now. I see a couple suggested pictures over to the side I'd like to see.
I think it is the delicate use of colour and perspective in this one, haloes by that arc that frames a distant metropolis. It has a dream like quality to it.
I also like when people explain what they do, but sometimes trying to figure it out by myself is part of the fun =]