Of course, if you're using a background image, then your building IS floating above it. :) Why not render your scene in Vue - import the building and figure and go from there? Everything would be of a piece then. The perspective and shadows would be right, which is the main reason things don't look right here. For Poser 6 and later, where there's no opportunity to render in the landscape application, there's the shadow catcher facility. I can't recall exactly how to do it, but you can render the shadows on your ground without the ground itself. The other thing is to make sure your camera and light settings are the same in both applications, as far as possible.