based on my understood. here is the chart.
if we are in the bearish XABCD chart, find two highs, two lows, now we are going to find the potential D, third high and sell the pair.
ideal, the D should have a bearish ABCD, you can see a potential region (CD=(0.886-1.13* AB). D should have retrace from XC and BC, this will allow us to short the retracement at potentially reversal zone. if we can see from wave, XA should be wave A, and AB should be B, and if BC can be named as C1, then we are going to sell at last leg of C3 and against the wave C2. the minimal target must be C and best target should be DE=BC, we should know there will be another bullish ABCD pattern now if price hit the E.
anyway, try to find out the timeframe above 30 min.