Rules For buying options(CE):
1) Make sure you get the buy signal and the candle is closed above the green line.
2) Don't buy trade if the price is falling wait for the retracement.
3) After the red candle closes and it starts forming green candles you can enter.
4) SL will be the GREEN LINE or the LOW of the previoys GREEN candle.
5) Don't enter in the trade if the price have moved much in last 10 min, wait for the retracement and then enter.
Same instructions for the PE trade too.