So, thers this thing you can to do, its prety cool, it looks like this.
In order to create this effect, for mac users go to your facebook profile then hold Apple-ctrl-shit-4 your mouse curser will turn into a + take it and select your profile, make sure to get all the areas where (in my image) you see my face, because you will have to edit your picture to fit inside of those spaces.
Next, open up Photoshop.
In photoshop open the picture you wish to make your profile picture, then hold Apple-V to paste the screenshot on top of the other image.
Now take the screenshot and make it %50 opacity and resize the image below it untill it matches up with the boxes where you'd like to see your face.
Then with the marqee tool (selector) click on your face layer and one by one, select/cut around each box and coppy and paste into a "new" image. Once you coppied/cut all 9 boxes import them into facebook (the order matters) and it should work. For the bottom ones, where u see my nose you need to create an album then import those 3 photos.
If it didn't work, don't try again, because you will never get it.