Well it's hard to say...
becuase all I saw was the intro and then the mushroom kingdom background with a koopa running, and then it went back to the play menu. You should add more then just this, but since you're making a different series, I don't think you will have time to do more of this, so it won't make a bit of difference to what I say, but if you didn't make a new series, I would say, "add a lot more into this series than just an intro, and a koopa running in a mushroom kingdom background." That's all I would have said, that's why you're getting a low review because you didn't do much of this to begin with, you should have made this to see if it's good enough to make a series into it. Sorry for the constructive critism, you know what I mean, but you shouldn't post something that is not finish, except if it was a trailer to a series that you were planning on making, you could have done that instead. But anyways, since you have made a new series, you're probably won't have time to make this one, so nothing more to say.