It's an entertainment media, so from my background and experience in the broadcast industry my philosophy on game making and producing commercials and bits are the same:
Do the best you can today. Put as much polish and finish as you can on it. Then move on to the next project.
Quality is number one for sure, but you have to finish a project and then let it be. If it's a hit, great. If it's not, you apply what worked and avoid what didn't in your next project.