SPY Supply & Demand Zones 30 min

My first time drawling supply and demand zone for a stock (or etf ). Please let me know how I did and give me any feed back that I could use. The green is the demand zone and the red is the supply zone . I put in a purple box which indicates a "balance" zone where buyers and sellers are at a balance, which is where price consolidates. the balanced zone is usually followed by a big move upward or downward which means either more buyers stepped in or sellers. Once again I am still learning how to draw and understand supply and demand zone, any helpful feed back will be much appreciated.
Chart PatternsDemand ZonenoobanalysisSupply ZoneTrend Analysis

또한 다음에서도:

면책사항