Compositing Assignment: Making a small object large, or a large object small.

In this assignment, I want you to insert a small image into a large landscape, or a large image into a small space: think of putting a giant banana in the middle of Times Square, or putting the eiffel tower into an aquarium. This is a basic compositing exercise -- I want you to make it as convincing as possible. Six things to look for when compositing, to make consistent across your composited images:

1. Color Balance
2. Brightness and Contrast
3. Key Light Direction (and Shadows)
4. Perspective
5. Blur
6. Grain

Here's a good tutorial on changing the lighting source for an image by creating two layers for a single image, adjusting them to highlight and shadow values, and then blending the two layers:

Lighting a Giant Elephant By bpkelsey
http://www.worth1000.com/tutorial.asp?sid=161386&page=1