Sit square in front of your monitor, with the image directly in front of you, at about arm’s length.
Sitting further back makes it easier – you don’t need to cross your eyes as much – but makes the image look smaller.
Make sure you keep your head level horizontally, tilting your head will prevent you from merging the images.
While keeping the stereo pair of images in the centre of your vision, slowly cross your eyes.
I tried to do this test, needs a lot of more work for full depth.
Thanks for watching or trying to watch.:)