See original below with DWEB trends turned on. DWEB trend nodes are marked with red shaded circles. The Gann fan simply connects nodes at a 1/1 ratio. This should prove to be an added tool for price prediction.
What to watch for in terms of price action:
Price captures trends?
Price respects/follows or rejects/fails trends and retest?
Look for patterns and make buy/sell thresholds.
How does price react at each crossing at each drawing?
Trade confluence and confirmation based on your timeframe and risk limits.
Long-term outlook I want to build longs only if I see confirmation and confluence across multiple charts.