I realise this is the shootorial game but here are some improvements that will a little researching and tinkering you could do to improve this game:
1. Make sure the that the ship cant go off the screen.
This is because you then become imperviable to enemy fire and if you go to far, you can lose your ship.
2. See if you can work out how to add a menu.
This way if something goes wrong you can restart the level, also it means the game doesn't start straight away.
3. Ignore all non-constructive negative comments, i bet the people that make these comments wouldn't even be able to make this game with the tutorial.
Good Luck
Your Friendly Neighbourhood
Spider.....I mean Bin227
Man Versus Machine Challenge
Prove your mastery of Kongai and mind reading by shredding Kong-bot three times!
Kong-bot thrice slain – You can face Kong-bot in "practice" mode. He's more machine now than man: twisted and evil.
You completed this challenge jul. 25, 1914.
The Great WAR of Kongai and also the war to end all wars
 "Treadmillasaurus Rex"){kind=icon}
 "Helicopter TEST 1"){kind=icon}
 "shoot"){kind=icon}
 "Blow Things Up!"){kind=icon}
 "SeppuKuties"){kind=icon}
 "Kongai"){kind=icon}