To trade this pattern you need to place a limit order at D-point. Stop loss is X-point, targets are 0.382CD and 0.618CD. Usually we close half of position at 0.382CD and breakeven the remaining half. But I personally close all at 0.382CD.
As you see all the calculations are very connected to XA leg. If you can identify it then the rest is simple. To know how to identify XA leg you need to know how to read the market structure. If you want to know more about my trading aproach then contact me in Private Messages))