passenger side outside mirror questions?

I put one on my car while it was apart for a repaint. I took the measurements from the driver's side and used them to mark the spot to drill on the passenger side. Wrong! I presumed it would work but I can't see a dam thing out of it. I was told afterwards that you have to point the base in towards the window, install it crooked. Had I known that before would I have done it, probably not but it sure would be nice to be able to see out of it. Not sure how much you have to turn it in have someone hold it on the door and move it while your in the drivers seat. Hope this helps. Bobby