I picked a random futures chart and copper seemed to have a nice setup in process. Might actually take this trade. Red circle shows closes above last move down to make our low, signaling possible trend reversal. At this point we are now in the middle of the pullback and it looks like it might make the desired higher low. This is where I would get long and take profits as it pushes to make the swing upward. Green hand drawn line is my predicted path of price action, just for fun. NOT TRADING ADVICE. TRADE SAFE.