It's a typical first amv with random scenes with no sync, and nothing really flows with the song(And that is to be expected). Don't get the wrong idea, I'm not trying to bash you in any way. I'm actually really forgiving when it comes to inexperienced editors. But, you still have a lot to learn in terms of sync, flow, scene selection, mood, and if possible creating some sort of a concept for your amv.
I've given this advice to all the new editors, and I'll repeat the same here. The best way to improve is to watch other good editors work, and learn from it. When you feel you have grasped the concept of sync, flow, scene selection and mood, then you can apply those to your work, and it will hopefully turn out something good. You don't really have to stress your self to be perfect at any of those things, but again it will help make your amv's more entertaining to watch. But most importantly, you should have fun while editing! =]