- Zoom in so that my gaze is actually looking at distinct parts of the physical screen
- Look at the cursor while clicking a few times to train it
- Take off my glasses
- Move way closer to the camera and hold relatively still
It was a lot of hassle to get it to work but after it did work it was a lot of fun!
I was wondering if that was the problem for me, but I'm so near-sighted that if I were close enough to actually see the cursor, there's no way the camera could see my eyes to track them. :-(