Let me tell you something...
If you want feedback, here it is.
First- Make the game interesting. It wasn't. Do something new for a change- like a weapon system that can only be used so many times, or multiple character-controlled ships on screen at once. Something to hold the interest.
Second- make the shots smaller. Low-powered large projectiles are lame and irritating. High-powered small projectiles are interesting and unexpected, as well as somewhat unique. Also, shots should have two of Powerful, Fast and Quick-repeating. AOE counts as Powerful.
Third- for god's sake get the style together. Make the sprites... well, not similar, but put a theme through them. Right now, you've got a pixelart ship, gradient lasers, line enemy beams, tweened explosions and vector enemies. Get one thing going or the game looks shoddy.
Fourth- If you're gonna have scoring, take out a zero. This is mostly a personal thing, but if the lowest score you can get is 10 and there are no 5's, then you've got an extra digit. However, really, you should make the levels interesting enough that scoring isn't necessary.
Fifth- Do your research. Tyrian. Guxt. Ether Vapor. Excellent Bifurcation. Hell, even Lacewing. Use them for reference about style and substance. (all free downloads, btw)
Finally- get on it, my lad. Make the enemies powerful, the character equally so. This game wasn't interesting, but I'm sure you can get one going that is. Go for it. And Good luck.