Nice!
I'm glad you said something about your movie in your review of mine so I could come see it. For being your first flash, this is nothing short of amazing. I don't know if you have seen my first, but its horrible! I Really like the use of painted backgrounds, and I think it gives it a very anime feel, especially because robotech was one of the last good anime with hand painted backgrounds. Now days its all crazy CG stuff. Even I am guilty of that. I can also say I am not nearly as true to the original as you are with this, and that's amendable within its own right.
I would suggest you trace moving elements into vector graphics in Flash though, that would probably look allot better, especially when the elements move. Flash doesn't Handel images very well.