PowerCurve (It's not necessary PowerShot):
PowerCurve to the Left
To PowerCurve to the Left, you just have to put the ball to the
Left (Ctrl + Left), press the spacebar (or mouse click) and when the indicator is returning, in the middle of the bar, press to the Left (Long Tap - keep pressing until light blue arrow appears) and then hit PangYa, as shown in the figure below:
PowerCurve to the Right
To PowerCurve to the Right, you just have to put the ball to the Right (Ctrl + Right), press the spacebar (or mouse click) and when the indicator is returning, in the middle of the bar, press to the Right (Long Tap - keep pressing until light blue arrow appears) and then hit PangYa, as shown in the figure below: