Ew...
It doesnt look like cookie monster at all. I cant see the hands. Looks more like he has Dog Tags and is wiping his eye.
Also, the unnecessary 1x1's around it should be removed.
Here's some tips : Save the cookie Monster icon. Right click and save this :

. Then, open it up in paint or paint.net and zoom it all the way. Use 1x1 prints plates on a base plate instead of a 1x1 wall, since the side of a 1x1 brick is a rectangle, and the top is a square. It will look better.