Needs improvement... but I think you know that
This is definitely not bad at all for a first flash. Having read your "Author's Comments", I think you recognize that there are obvious problems with it, but there were some good things, too. You are a talented artist. Obviously, there is room for improvement, but overall your drawing skills are much better than 90% of what you'll find in the portal. The actual animation was a bit lacking, but still not bad for a first go. The storyline was somewhat funny, in my opinion. However, don't let that discourage you; there are plenty of people that would like your type of humor.
The only real problemm with the movie that made it seem recognizably incomplete was the lack of sound. Certainly some type of intro music, sound effects, and VOICES would do this movie some good. I'm not sure whether or not you have access to any type of voice talent that would fit the roles, but it would definitely add a new dimension to the movie. However, if you must stick with text boxes, time them a little better or put less dialogue in each bubble so that even the slowest reader will be able to catch everything.
Other than that, great job. Keep practicing.