RESEARCH: HOW TO MAKE SOMETHING LOOK BIG

During the process of creating the storyboards, a question came up: How to make something look big on screen? How to shoot it, light it, compose the shot, so that the 25-foot toy I'm trying to depict does look larger than life? I looked at some films that succeeded in doing that, regardless of being a dinosaur, a robot, or a 25-foot gingerbread monster. Overall, thay all seem to agree in a couple of things: keep the camera at a humanly possible possition and angle and try to have objects in the foreground and background, to establish relationship. Here's clip showing how 1993's milestone in VFX, Jurassic Park did it:
http://homepages.nyu.edu/~rd888/jpc_002.avi