NZDCAD Short after retracement

https://www.tradingview.com/x/XsRJjk7K/

A big bearish crab and a small bearish AB=CD has led NZDCAD to fall from 0.931 level and from the chart we could find that a bullish channel was broken.

Currently a bullish butterfly was formed and some retracement was expected to happen.

Find a short opportunity after retracement.