Firstly you look at a daily candlestick chart and find the pair which may have more volatility.
After the New York close before Australia opens you make the limit orders. 30 pips below the current price sell and 30 pips above the current price buy order.Stop loss and take profit limits are 20 pips.After one of the orders execute you cancel the other limit order.If one of the orders execute and nothing happens you close the order before the New York close.
For a more volatile pair like GBP/USD you can make the orders 40 pips far and 30 pips take profit limit/stop loss.
After the New York close before Australia opens you make the limit orders. 30 pips below the current price sell and 30 pips above the current price buy order.Stop loss and take profit limits are 20 pips.After one of the orders execute you cancel the other limit order.If one of the orders execute and nothing happens you close the order before the New York close.
For a more volatile pair like GBP/USD you can make the orders 40 pips far and 30 pips take profit limit/stop loss.