BTCUSD A case for a bear flag

COINBASE:BTCUSD   Bitcoin / U.S. Dollar
After making a ATH in April Bitcoin has been moving on a downward slope.
What could end up as a bear flag looks like it's building at the moment
A break of that bear flag to the downside could target the $16 000 level again.
This will equate to around a 40% drop
Caution is advised on long trades if this flag breaks to the downside