Awesome flash! This is the kind of creative stuff Newgrounds needs. =) Two problems... unfortunately, they are major ones that really hurt the functionality of this flash. Overall, the main purpose of a tutorial should be to teach... entertainment value in a tutorial is a godsend these days, but you may as well just have created a random cartoon if entertainment was the focus.
1) I didn't see a summary/topics covered list. If there is one, it isn't prominent enough. Since there is no explanation in the title to help us figure out what we are going to learn by watching, this list is doubly important. Someone trying to find specific information will probably skip over your tutorial entirely because they won't be sure if your tut is relevant or not.
2) There is no navigation during the tutorial. It plays more like a movie. The intro was great and the little animations and voices during steps is great also, but where's the PAUSE between steps? Someone actually trying to follow along with your tutorial is going to have a very hard time. What if someone wanted to go back to a previous step because he or she made a mistake? Each 'step' needs to be it's own mini-scene so the viewer can flip forward and backward through the tutorial. And we need to be able to skip the intro so people can go through the tutorial multiple times without going a little insane.