Dotted and Pixelated Photo in Photoshop

Let's try something new today (if you haven't tried this before). I'm going to call this photo effect, dotted pixelated pattern on your image. This might not be the right term (coz I don't really go to Photoshop school), but I hope you'll figure out right away what I'm talking about after looking at the preview picture below. This neat effect is fairly easy to achieve. And if you're up for a