Dow Jones: TIME TO SELL?

The index broke a 4 months old support and is forming a bear flag while retesting the barrier. The 3 major daily moving averages, 50, 100 and 200 Daily moving averages are also acting as resistance. Sell pressure seems certain but where is the move down going to start? The supply zone and the diagonal resistance above the flag or after the demand zone below the flag. its time to start looking for the sell setup