if the flaps still dont come down,then as BOAC said you are a test pilot.
You could also be on standby power, not a situation when you want to start faffing about wondering what position your flaps are at -
as that Ryanair crew discovered into Stockholm!
As Cough said, pitch and power...
However, the barbers pole will settle at the placard limit for the current flap if it has extended as commanded, so it is also a good proxy too.