The first thing I have to say is I absolutely love the grain. I think it gives it texture, feeling... a deeper sense of "realism," even.

When looking at the piece, I see an old junkyard in NYC, honestly. I love how it gives the appearance of jumbled and worn; it's a nice break from all the neat, perfect, shiny fractals I see so often.

The only thing that really bothers me is the bottom...compared to the business of the rest of the piece, it feels a bit left out. I'm no good with fractals at all, but I think maybe you could add just a little something to offset the imbalance.

Great work!

I don't think that the grain helped out here that much, besides the title. Rather, I think it's more of a disturbance. It's a little too overpowered here. Maybe with slightly less grain and better composition (especially placing of the focal point), it would work out better, at least in my eyes. The sharp background figures don't deserve to be overshadowed by the grain. One way to make both your foreground and background meld together is to have the background figures a little more mute and soft.

Hard grain on hard background = Very rough.
Hard grain on soft background = A little softer.

The movement I'm getting from this piece is quite nice, though. I really like what you did with the lines in the lower left-hand corner. The colors certainly add to the mystical qualities of this work.

So that's it, I guess. A little softer grain and better composition might make this piece look a lot better. It's just too rough on the eyes to be seen as appealing, although the concept gets through fine.