Put a half a ball width on the slip skid indicator with up to 5 degrees bank toward the running engine for straight flight, and then trim it to hold that ball position using the rudder trim. This should be part of your engine out procedure every time.

Things get tricky in the turn. When you turn, resist the temptation to use the typical inside of turn rudder that we normally use to counter adverse yaw. Just turn the airplane with the ailerons almost exclusively. Scan the slip skid often and adjust rudder accordingly. You will get better at doing this as you learn the feel of it rather than having to use the slip-skid to know what to do.

Worst case is going to be a base to final turn with the good running engine on the inside of the turn, maybe in crosswinds and when you already overshot final due to crosswinds. This is a very dangerous situation! It typically occurs in IFR on a circle to land approach where the running engine is on the inside of the turn. You must keep the ball more or less coordinated through the turn. This means the only way to turn the airplane without reducing power on the running engine, something you should never do, is bank fairly steeply instead.

It is a bit hard breaking the old habit of kicking rudder in the inside of a turn when it wants to fly through final. Banking fairly aggressively with ailerons in this situation particularly if you have a strong crosswind on the running side causing you to overshoot final is the proper way to correct.

The issue with light twins is they cannot do go-arounds on one engine due to poor climb performance on one engine. Go-arounds on one engine are more or less a death sentence. Even if it climbs a little, the rate is so poor you will hit something before returning to the airport. You simply have no choice but to bank rather hard if you want to get on final.

The reason it is best not recommended to steer the airplane by reducing power on the running engine is how much it sends the airplane into an uncontrolled yaw. You generally want to make small power adjustments and steering with the throttle is too risky. Bring the power down in small increments as a rule of thumb.

[edit] Mr. Grumble typed faster then me by about two minutes.