Though you won't be able to see it yourself, your eyes should now be crossed. But this is no fun so far--since you're looking down, no one else can see that your eyes are crossed.
[header] How to cross your eyes [title] Focus both your eyes on the tip of your nose. [step] Slowly lower your gaze until both of your eyes are focused on the tip of your nose. This may cause a bit of an eye strain, since you're probably not used to using your eye muscles this way.