I guess...
Don't be lazy? That's about the best advice I can offer. It seems from your author's comments that you know what your flaws are, you just choose not to change them. Your score is going to suffer for that but hey, like you said, you really just wanted to see them animated. Also, the colored flashbackish picture things really felt out of place with the lines-only rest of the animation. While I would have preferred to see the whole thing colored, having only bits and pieces of it colored is distracting and messy looking. In the future you should go all or nothing. To be honest though, the voice didn't really bother me or make me laugh, it just seemed like a voice. I didn't really catch it was a robot until I read your comments (which I did after viewing the flash). Good luck in future projects, always strive to improve!