First up I move the camera around to get the basic ground position and camera angle correct, then set the perspective. I then loaded up Mr. Lambo and got him into position and the right size for the photo. Then I tweaked the camera and perspective to get the lambo looking proportioned to the other cars.
TemplarGFX
3D Hobbyist since 1996
I use poser native units
167 Car Materials for Poser