How I Use Supply & Demand Zones for Gold (XAUUSD) — My 3-Step Pro

Been trading gold for a while now and wanted to share my approach using supply and demand zones. This has probably been the single biggest improvement to my gold trading.
Quick version of my process:

1. Mark the zone — I look for areas where gold made a strong move (at least $15-20 in a few candles). The consolidation before that move is my zone. I mark it from the wick low to the body close.
2. Wait for price to return — This is the hardest part. You have to be patient. I only look for entries when price actually comes back to the zone.
3. Confirmation candle — I never enter blind at the zone. I wait for a bullish/bearish engulfing or pin bar right at the zone boundary. Only then do I enter with a stop just beyond the zone.

Key things I've learned:

1. Fresh zones (never tested) are WAY stronger than zones price has already bounced from
2. Gold respects H4 and D1 zones better than lower timeframes
3. News events can blow right through zones — I avoid trading zones during NFP/FOMC
4. The bigger the initial move from the zone, the stronger it tends to hold

Found a good breakdown of this approach with chart examples — there's a supply demand oscillator that actually marks these zones automatically on MT4. Got it from ForexCracked's indicator library if anyone wants to check it out.
Anyone else using supply/demand for gold? What timeframe works best for you?