Hm, not bad for a start. Now I'm no animator but I can see a few things. Now, you gave a bit of mystery at the start. A robot running away, what was it running from? The girl, is she a robot as well since that eye came out? Maybe a bit of text, you don't have to use dialogue but if you're going to keep it short try to put a bit more emphasis on interaction, talking is a good way to emphasize it. You could splash in a bit more color, quite a bit of green and brown along with yellow. But still good for a start.