Computers Illustrator Final

This was my final exam for my Computers In Visual Media class at university.

The object of the final was to recreate a raster image in a vector style. The original file can be found here:
http://interfacelift.com/wallpaper_beta/details/2000/sacramento_tower_bridge_passing.html

I received a 100% on the final for this recreation. I do not, however, feel I deserved it. The instructor asked to hold onto this piece to use as an example in the next class.