This has to do with the way your brain works if your left or right brained. I typed in spinning lady trick in google. some will see it spinning left and some see her spin right but if you try you can get her to flip on command..... it took me like 5 hours
![](http://www.news.com.au/common/imagedata/0,,5693171,00.gif)
Do you mean make her switch the rotation? I was able to do that instantly, I can make her rotate left or right depending on how I look at it.