@ Salsabila:
Observe the nearest swing high and swing low points. Swing high is the peak point (the one above), and swing low is the valley point (the one below).
If the price movement condition is in an uptrend, draw the Fibonacci retracement line from the swing low point to the swing high point, and if the price movement condition is in a downtrend, draw the Fibonacci retracement line from the swing high point to the swing low point.
For an explanation of Fibonacci retracement, please read: