Nifty has been bearish for quite some time now but, it is going sideways it, hasn't really fallen through. So it would it would not be prudent to short it now. Until it falls below 11600, and the way it has been finding supports it has been like holding on its own, shorting it seems risky.
And long red candles give high stop loss and near supports give very short rewards. Risk reward ratio is always important. So, no overnight trades in Nifty. It might be good for intraday options selling...