Hi
II am an experienced Flash developer with over 5 years experience and I am very interested in this job, I have done a similar app to what you want, Take a look;
[login to view URL] (click -Start Designing)
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Basically it is the same app that you need but in this app it customized a t-shirt
This app. have all the functions that you want; add color, text, upload image and many others.
These are others links of flash works:
[login to view URL]
[login to view URL]
[login to view URL] (close login window)
[login to view URL]
[login to view URL]
[login to view URL]
[login to view URL]
I can do a professional work and according to your requeriments.
If you need any other information, please, let me know.
Regards