There is quite a bit that needs to be improved on. The biggest problem I think is there are so many scenes that go on for a long time in utter silence. This video could've been like 30 seconds to a minute shorter if most scenes didn't drag out for too long. And speaking of silence, I would strongly recommend music if there is gonna be pauses. The silence just makes it awkward. Another thing is how you made the video. I don't know what program you used, but if it's a flash file, I recommend Swivel so you don't have to use a screen recording program. It's free so it should be no problem to get. And finally the sprite animation in general really needs improvement here. Not a whole lot of movement going on here. In conclusion, while you have the basic idea on how to make content, there is plenty to learn and I hope to see you improve. Good luck!