On AUDUSD H4 graph you can see a strong upward impulse, which was initiated (12.04.2017) after support test at round level 0.7500. The next test of this psychological area also characterized increased activity of demand. The quotations have created a sequence of increasingly higher highs and lows.It is worth looking at the chart with a lower time interval.
On H1 chart you can see a bullish channel and currently quotations are below the lower edge of it. Demand pressure and return to the formation area will likely lead to further increases. It is worth noting, however, that closing the gap may indicate the end of upward movement and rising supply pressures. Confirmation of this scenario would be the lower low from the low from 21.04.2017.