Today I found a couple of interesting articles from Sean the Flex guy about the best practices when you want to create a Flex project. You can find those articles here:
http://www.adobe.com/devnet/flex/articles/best_practices_pt1.html
http://www.adobe.com/devnet/flex/articles/best_practices_pt2.html
The first one contains some guidelines on how to structure and organize your project, while the second one contains about 90 best practices for your projects. I sure was glad to find out that I did 90% of them without thinking 
. I hope you guys can say the same.
But if you don’t, I would strongly encourage you to make these practices your own. It makes coding more efficient and working in teams more enjoyable for everyone.
Of course, these guidelines also apply to AIR projects that have been written in Flex, since you start out with Flex anyway.
Have fun with it,
Steven
Hey Steven,
Thanks for taking the time to check out my articles on Flex best practices in the Adobe Flex Developer Center. I agree that following standards makes team development far more enjoyable.
Thanks again for checking out the articles. I had a great time writing them and really hope they help the community.
Kind regards,
Sean