Something to think over... why are you trying to short the Strongest contract (of s&P and Dow) on a UP day after a huge UP day in a BULL Market ?
I have done the mistakes that you did and around the same timeframe as you.
Its very tuf for me to tell yopu to reconsider, as I know how it feels when Trading is all you got and some one tells you you might be doing something wrong.
Anyways sisnce you are here, I believe you are openn to criticism. I am not sure if I personally recommend anyone Daytrading a futures contract for a newbie (you are a newbie untill you are not consitent winner)
gudluck.