Columbia University has a new creative writing major and on the application instructions, it says that anyone pursuing anything in the creative or visual arts may submit a supplement to their application. Creative writing is specifically listed, however, I am not sure what to submit.

Would they accept a few writing samples in the mail after I electronically send my application or should I include the writing in an attatchment with my personal statement online?

I am 13 working on my portfolio, short story and I am desperate for a senario, because as of now, i am blank, and just clueless as to what i am gunna base it on! I thank you so very much if you could just plz provide sum scenarios for me!
- Em M