This a very quick simple tutorial and a bit of fun! I have made a range of different sizes – 50px, 75px, 100px, 150px patterns so you can easily apply the effect in seconds. I suggest you try some masking of layers as well to experiment with design :) .

In this tutorial i show you how to make an halftone dot effect with the pixelate filter > Color Halftone... in Illustrator CS4

This is 3 steps workshop to make blue shade background with dot.I got this idea from ebay.