Judging after the first one:
1: Free version of craps is crap, and you're having some FPS drops. A GREAT downside.
2: Don't use windows Movies maker's crap screens to tell the viewers something, highly unproff.
3: ALWAYS keep Interface off ;]
4: Don't type something to someone, plan what you're going to write and make a macro.
5: The music. I didn't mind the first song, only the second ( I'm not into Linkin Park) If you like it or not, people trance dance bla bla fits in best.
I don't expect you to be 100% like Nogg-aholic movie or something, but try to put alot of effort into your movies, and they might become famous!
Ohh and, some of the things could use to viewed from another position, and people isn't much into just watching you mount on a road showing them what there is at the sides.
Well, maybe it's just me watching to many pro movies -.- Meh, don't care
I don't mean to be rude or anything, just honest and giving my opinon.
Use some of these, and you knows you might become famous! :O