Here are 3 thoughts to guide you while practicing engine out flying.

Control is all about airspeed, and pitch controls airspeed.

The natural reaction when control feels weird is to slow down and gain altitude for safety. For a multiengine plane you must train yourself to do the opposite. If the plane starts turning on its own, and you are correcting, and it is not responding, you must lower the nose to gain airspeed. The first reaction is to keep applying more and more correction. The proper reaction is to lower the nose until correcting becomes easy.

Here is a simple exercise from full size pilot training. In level flight, throttle one engine back. Speed will deteriorate and the plane will pull towards the weak engine. Apply correction to keep it going straight. After applying only a modest amount of correction stop applying any more and freeze the sticks right where they are at. Next, moving the elevator only, lower the nose enough to increase airspeed again. When sufficient airspeed has returned, the plane will turn towards the strong engine (towards your modest correction being held). Then raise the nose a bit to slowdown again and it will turn back towards the weak engine. Lower nose, speed increases, plane turns towards the strong engine. Raise nose, speed slows, plane turns towards weak engine. And so on… Continue flying the plane all around the sky using only elevator for turn control until the importance of airspeed sinks into your head (and thumbs) loud and clear.

Multiflyer