This flash has amazing potential.
I suggest a few things:
1.Shading
2.Better art
3.Submit audio to audio portal then use it and refer yourself, helpful.
4.Have more than just people dancing, add some jokes
5.(related with four) or if you don't like humor, (which is much easier since you won't need to do a story of realistic intelligence) you may use drama, serious shorts, or maybe evena horror spoof, anything can happen in NG.
I wish you the best of luck, you seem liek an honest new user from newgrounds. Bless ya! -RyanTime2