My old Pixel Eye Blink Tutorial
was kind of outdated, so here's a new one using Photoshop CS6. You can save it to your desktop to view the steps at your own pace.
I hope you use this knowledge for your own pixel eyes, rather than copy it exactly. You can copy me if you're clueless, but you should really learn to adjust the animation to fit your type of drawing in order to get used to it. Try and play around with the timing on your own too.
Make sure you set Interpolation at the top to Nearest Neighbor
when you Transform pixels.