Pretty good advice from rho there...just remember attitude, a constant attitude approach, if you have a particular attitude set on final any adjustment to it requires a change in power if you want the speed steady, ie a slight pitch up, power up, a slight pitch down, reduce power, don't be too "reactive" to the ASI, try to be proactive. All flight instruments are luxury items in the circuit, you can do one without looking at them, so don't fixae with head in cockpit otherwise your circuits will turn into DB
