Painting "The Factory" - Part 1

I've been trying some new method to paint my works. Usually I start passing the drawing directly to Photoshop, but now I'm trying to do the outline in Illustrator, and when it's finished, I'll pass it to Photoshop.

I'm doing this so the line can be cleaner and, perhaps, the painting in photoshop will be easier.

This is where I am right now - I'll probably spend a lot of time doing this...