I would strongly suggest you do a search for ChineseBurned's template for AWA. I studied that for about an hour along with the template from the Princeton Review
book. That was enough!! And I honestly believe it will be enough for anyone. As long as you have a good structure to your essay, write a lot and use some of the key words, you will definitely get above a 5. You can almost write anything (god knows I wrote every stupid idea that came to my mind to fill in the space) Got a 6 on my AWA.
Once again, IMHO do not waste time on the AWA. Especially if you are a native speaker or can write decently, it really should not be a focus in your preparation.