It's a good milestone, for your first flash

But the faces gave me a small scare, there was no point to the enemies' attacks, and what exactly were they shooting. You were real close to making a basic shooter, just change the white background to a top view of some alley or street, the faces to circles for stick figure heads, and the projectiles as bullets. Then try to implement some life feature for the main character. However you want to proceed.

Well you tried, right?

I think you need to go back to the drawing board. There are a few things that could be improved. One would be that you should find some way to make it impossible for the player to navigate outside of the white screen. I also think that maybe you could add lives for the player because at the moment a player can just ram into the oncoming heads. The heads could vary a lot more too and perhaps give different heads different kinds of attacks and different hit points. A change of scenery every once in a while would be refreshing.
Don't get discouraged.
-Thanks for reading!