Really Real-Time Strategy – my first game

I’ve developed my first game MiniFlashRTS, it’s really RTS as I suppose. I’ve written it in ActionScript 3 using ***[URL=“http://www.flashdevelop.org”]FlashDevelop***.
What’s your opinion? Is it good or not? What should be improved?
If you have any questions about programming techniques I used don’t hesitate to ask.