As we are approaching the upper line of down trend channel of nifty we need to be ready for big move from those levels,
1) Price can take resistance and reverse
2) Price can trade along the line and move side ways
3) price can move out of channel with force
If we want to trade 1st and third possibility then wait for followup on next day.
Never try to judge top or bottom just be ready to trade if price allows to do so :-)
Trend is our friend