Brings back memories.
I'll answer your questions:
1) It is 'ok' as it is, but it would be a lot better if you made it a little longer, add a scene between the peace signs and candy, which eventually leads up to the end, which was a nice touch (?lol?).
2) The music was good and fitted in well. Perhaps another scene would have made it a bit better as you could have put in other songs.
3) Some of your stuff is not as good as this, but its a bit tricky to rate them against the others if you are using sprites etc.
All in all, it was good, I'd have had more to say if it were a drawn flash, but this was still enjoyable - and it took me back about 10 years.
Hope this helps, the idea was good, so I hope to see more of your stuff.