Sup
Good effort! Here's some things you should improve on...
- Fluidity: try to smooth out the animation, it's fullbody so you really have to concentrate on putting more frames into movements
- Graphic quality: a hard one to perfect but just comes with experience. Try putting some shading and shadows into your backgrounds and graphics.
- Consistency: Gotta keep the characters' shapes and sizes relative throughout the animation
- When you get to it, put some decent audio instead of text for the speech. Good choice of music though!
- Effects: Experiment with effects tests, they'll spice everything up. More realistic blood, explosions, dust clouds, smoke, sword sparks etc.
You've still got a long way to go, but every step counts. Keep it up mate!