And another one.
And another shooter falls on the pile...
This game could really need some stuff (and I will not include better graphics on this list since you've allready stated that graphics are not quite your thing) :
First of all, the figures sometimes leave the boundaries,as it allready was stated below. This really should get fixed.
Second,all shots are headshots. While that is quite funny for about twelve seconds, after which it becomes quite irriating. There should be at last one more animation for this stick figures.
I'd also like to see holes in the ground if the player doesn't hit a target. While that wouldn't affect gameplay (given a user doesn't shoot like hundres of bullets into the floor),it'd be some nice eyecandy.
Finally,you change the weapon. The weapon used in this game looked pretty much like a machine gun and should therefore behave like one (including rapid-fire if the mouse button is held down.)
On the other hand,this game isn't bad if one considers it as your second game at all,so I encourage you to practice,practice and,if you have some free time,practice more.