A Good TDD Process Diagram?

I am trying to create a flow diagram that depicts the Test Driven Development process and I need your expertise/opinion/criticism in nailing it down.

Take a look below and let me know what is wrong, what is right and what can be done better.

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I drew the above diagram based on my understanding of TDD and by referencing other diagrams that I found online.  Specifically:

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from http://www.agiledata.org/essays/tdd.html

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from http://designindrive.com/?p=31

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from http://tinyurl.com/498pjg