Nice idea.
Just 2 things.
The inner triangle has a strong line and the continuation of the inner green solid part of the V has another line. I would like to see those lines aligned.
Another way of saying this is to position the top of the white triangle inline with the bottom edge of the green mini-V. Do the same thing for each side.
As you look at the image think about the look of the empty space (negative space).
For example: can you see the arrow in the background created by the "E" and the "x" in FedEx?
http://www.fedex.com/us/
My second point is that the tool to use is Adobe Illustrator or Fireworks. These programs are used in industry because they are vector based programs and allow the art work can be resized with minimal effort.
Dave