Try this test instead. Take a sheet of paper and cut a hole in the middle of it about the size of a nickel. Hold the paper out at arms length and focus on an object like a clock on a wall. Close one eye or the other. If you close your left eye and still see the clock, you are most likely right eye dominant. If you close you left eye and the clock disappears, then you are probably left eye dominant. This tests keeps you from having two left thumbs.....