pretty good!
For only a second attempt at flash this was pretty good. You should definately develop your technique and continue the series. Here are some things to consider:
I noticed that your sprites tended to loop a lot during the beginning, and at some other points during the flash. You could try slowing the animations down a bit, or varying them slightly.
I also noticed that the characters' speeches usually weren't that long, and it was a little annoying having to wait for the text to change by itslelf, so I recommend a "click to continue" feature or something similar.
Also, the art for those portals seemed to be a little lacking in my opinion. I understand you may not be great at art, but they looked a little out of place in comparison to everything else.
Finally, sound efects could be a nice addition to your work. But, if you want to keep sound limited to only music, that's nice too. Just make sure you strike a balance between too little and too much sound, as too much is annoying, and too little can make the viewers jumpy when it occurs.
It's minute details like these that help to improve the overall presentation of your flash. Keep up the good work!