If the price touches the gray line for the second time, it would be a good time to short NZD/USD...
Bitcoin can be a good buy if it maintains its current range.
Price is on a wedge. It is suggested waiting until the price hits top of wedge OR wait for the breakout then SELL.
Price is on a wedge . If : reversal candle then SELL Else : BUY
Price is on a channel. if: breakout candle then BUY if: reversal candle then SELL
So simple, price is in a flag. Successful breakout of the flag roof = BUY BTC/USD
Price is in a wedge; wait until price does a good reversal action at the bottom of the wedge, then buy EUR/USD. OR Wait until the price hit the top of wedge again, then sell EUR/USD.
Buy - Long trend line is broken. Consider the small price and spread difference in brokers.