We use price channel for our forex analysis frequently. Here is an example in August. EURUSD fell from 1.2908 and tested the price channel in August 9, the fall is limited by the price channel and rebounded to 1.2908 area in August 10.
How to draw a price channel
1. Run MetaTrader and press the “Equidistant channel” button on the tool bar.
2. Draw the first line from A to B.
3. Move the second line to C.