Definately Needs some work.. but a good start
I think this tutorial was a bit brief, and lacking.
It was missing a few things...
i especially didn't like the fact that i was viewing a tut where the crosshair wasn't even centered to the mouse... it gave the feeling that you didn't know what you were doing.
Also, when i read 'tutorial' i REALLY didn't expect to find a copy-and-paste code inside. And you used such simple code, the part where you get the crosshair to move/animate isn't what people want to learn. That part is easy. If you have experience in these games, you should have taught on how to make the crosshair interact with moving targets. Also your demonstration crosshairs were kinda buggy... like the fact that the bullet should leave the crosshair after you shoot, not follow the crosshair 'till it goes away.
I KNOW you can do better... but this looks like it was done in a matter of minutes. I also expected it to be a bit longer than a few frames as well...
Keep it up, good tutorials are revered by all, but when it comes down to learning flash, an ok~ tutorial usually doesn't cut it. Because here, on Newgrounds, nobody likes to see an ok~ flash. Newgrounders make FUKN AWESOEM flash :D
Hope i was help. And please remember; i'm not trying to flame you, man. I'm just another Newgrounder trying to pass along some advice. So keep up the work, i hope you succeed in the flash world :)