Well, you can always add more frames! But before you go on to that, you need more work on your base animation. Adding more frames to a weak animation only results in a weaker one. Take Altoontoon's advice again, it's very good. Read his post really carefully. I quote: "I think you must draw every frame, don't try to copy, rotate the members of the body because it [creates] robotic movements and your design is pretty organic." He is absolutely correct. Do not copy and paste the limbs! As hard as it is, you're going to need to redraw every frame. It's not as bad as you think it is though, and the results are worth it. Start with a basic silhouette, using slightly different colors on the limbs so you can easily tell the difference between the near and far ones. His "ISOBOX" and arcs advice is also very solid, make sure you do that. Do you have a program that lets you watch the animation as you edit it? If you don't, pick up GraphicsGale or something similar.