27 Mei 2016, GBP/USD
Buyers have failed to update High, which led to an abrupt downward price movement.
Perhaps, therefore, it was beginning of the wave [iii] of a descending impulse. Correctional wave [ii] is shaped as the plane. The wave [i] is a wedge that indicates a good downward movement in the near future.
Anticipating development of the wave [iii] of downward momentum, I've opened deal a Sell trade with a good target, so in the future I will probably open an additional transaction.