Build a Better Business (Illustration)

A work in progress illustration for an industry leading company. The illustration has the theme of "Build a Better Business" and so the concept evolves around a hand made model of a building occupied by a print business. I am using Adobe Illustrator and Photoshop to create this piece.

This will be used as both a poster and a net of the building which can be folded up into a card model. Stickers (those objects with the white outline) can be placed onto the poster and building model.

I'm mixing isometric angles with realistic looking models and some tilt shift focussing to help with scale, which hopefully will prove to be an interesting combination.

Any advice as to how I could get this looking yet more model like and life-like?

All suggestions, as well as opinions, welcome.