The crude oil has beautiful Trianlge which has moved below the trendline. But for Nickel, it may be different, and may overshoot the trend lines.
After making the pattern and completing the channel move, the movement is now in a Zigzag possibly. If structure is respected and moves as perceived, then the movement will see down move and then and steep up movement.
This is just a personal analysis and has no trade idea or suggestion.