I am very impressed with your design mate, the logo needs put over the image without the box, not sure about where the we clean frames bit is, looks kond of hinden, I know you have put it there so it stands out agains the background, but might work it in some where else. I think you should have your number up there somewhere, and more pictures, the before and after picts are always great, but definately lacks your mark on it.
What I mean is the desing is fantastic, but it doesn't have you on it, picts of your vans, cleaning windows, your employee etc. I get a impersonal feel from it.
You also definately want a payments page.