I have experience with traditional animation. The following are a number of practice exercises to test out the principles of animation in a medium that is not the one I am most comfortable with. Still, after working for a while on paper I really enhanced my abilities and I now enjoy the process of traditional animation quite a lot.
I have also worked with frame by frame animation in Flash, where you can go back and edit your frames, as well as to add color and effects to it. Here is one example of my work.